OpenCharities

This text was generated using OCR and may contain errors. Check the original PDF to see the document submitted to the regulator.

2023-12-31-accounts

British Tunnelling Society Annual Report and Accounts 2023 JamÈs Clark Medal Winners hjnch Rod Youngi BTS Chair British Tunnelling Society bts.chair@britishtunnelling.org.uk BRITISH TUNNELLING SOCIETY

British Tunnelling Society Annual Report and Accounts 2023 Executive Summary rj Rlng Bulldlnq on Thomes fideway West Executive Summqry In 2022 we had near normality back to the BTS and the industry, 2023 was fully back with the famous Thursday evening meetln8 "BTS Sausage & Chips" and it was great to see the ICE bar open and to see the ICE staff again. Projects again achieved the preparation and launch, breakthrough and turnaround of a number of TBM5 for major project5 such as H52 and Silvertown, as well as key progress on future procurement annountements. Stonehenge. Sizewell C, Coire Glas, Snowdonia, HARP as well as numerous smaller diameterllength utility crossings. Our membership saw a change in some areas from 2022. Individual membership both UK and Over5ea5 fell slightly as did student & retired member5hips* young members saw a further increase. and corporate membership increased by l. The year saw a full programme of BTS and BTSYM evening lectures being held both in person at the ICE and online via our YouTube channel. Attendance number5 did return to pre covid, we feel this was for several reasons: covid working reducing, the ICE Bar & the famous"BTS Sausage & Chips" being available after staffing shortages and then the refurb. Unfortunately we were required to have several meetings in the Godfrey Mitchell Theatre, which we filled and especially on one evening we had to have an additional area with a full sized screen to accommodate the overspill. We have had a good range of topics at the evening events and sustained a high level of online viewing. The Annual Dinner was held at the end of April, slightly earlief than usual to accommodate the King's Coronation. Table number5 were reduced from 2022 as It had been slightly crowded post covid due to Charity no 1017887 5cciETY

Britlsh Tunnelling Society Annual Report and Accounts 2023 high demand. The evening followed the established format, champagne reception, fine dinner. then the Chairf5 address from Rod Young. Our speaker, the football legend Kevin Keegan, focused on his career from starting at Scunthorpe Utd, to Liverpool, Hamburger SV & Newcastle United. Thanks were given to John Scholey for another year of organising the dinner and also to John Corcoran. We held the Harold Harding Prize competition for Tunnellers under the age of 33 in April with the winner being lake Rankin for his paper"Artificial Intelligence for Forecasting Tunnelling Progres<. Jake attended the BTS Dinner as a guest on the Chair's top table alld was presented wlth his certificate & book. Congratulations also to the runners up Ricardo Manias & Dr. Agustin Ruiz Lopez. Like other events, the Underground Design and Construction Course was once a8ain held at Warwick University and the Underground Health & Safety Course at the ICE, numbers were back to pre-covid. Thanks to all the industry experts that prepared and presented at toth courses. The 2023 James Clark Medal was awarded to Andy Alder, and we presented his award at our June evening lecture. We held the James Clark Medal Wlnner's Lunch on 19 October 2023, and it was fabulous to see all the past winners together, so much Tunnellin8 historylknowledge all in one room. The 4th edltion of the Specification for Tunnelling was completed and publicised as planned on the BTS website at the Dec evening meeting as the Technical Sub Committee Chair Christoph Eberle was giving an outline of the specification to us all, and the latest edition is available free to download from the BTS website. The Health & Safety and Standards Committee have worked on the British Standards, CEN Standards. Compressed Air Working and ITA Guidance and the documents are at various point of completion. plans for the 50th Anniversary Book continue, the number of photos, memories, stories and projecrs put forward has exceeded expectations and the book size ha5 grown, the result being publication will now be in 2024. The size of book is proving what a history the BTS & Tunnelling Industry has had over the past 50 yrs. I would like to thank all the committee for all their support and effort during my year as Chair. l am incredibly grateful for the passion and enthusiasm of our individual. corporate and committee members and what ha5 been achieved by theirvoluntary efforts. I finished my summary last year using my words from my"David Wallis Lerture 2022"_ the UK Tunnelling Industry has A Past to Be Proud Off, A Future That Looks Green. Well, nothing has changed, if anyihinE it has got better, which will give our Society opportunities to signif￿a￿tlY contribute to the Tunnelling workload in the years ahead. Rod Young BTS Chair Charity no 1017887 ITIS TLW4ÉLUN DG5ITY

British Tunnellin8 Society Annual Report and Accounts 2023 Contents BTS Committee......................... Chairfs Report....- BTS Objectives and Communications......... Finance and Membership... Evenlng Meetings......................... BTS Young Members.. .... .. Awards..-..... ... .10 .15 Education....-......... .16 Training and Courses.. Tunnelskills. .16 io. .18 ii. Health and Safety and Standards . Technical Sub-Committee.................-....... 21 19 12. 13. APPGI ... -21 14. Website.... .22 15. 50ih Anniversary...........................-.. T&T Editorial Advisory Board IEABI.......... 23 International Tunnelling Association........ 23 Annual Dinner..... .25 .22 16. 17. 18. 19. Institution of Civil Engineers............ BGA Liaison.............-......-....... .26 20. .27 21. Reserve5 PoliLy......................-... Legal and Administrative Information... Trustees Report . Report of the Independent Examiner..... 311 Statement of Financial Activities. .32 .27 22. .28 23. .29 24. 25. 26. Balance Sheet as at 31 December 2023 .. 33 .34 27. Notes to the Financial Statements...... Charity no 1017887 FITIS TUNNELUP SuciETY

British Tunnelling Society Annual Report and Accounts 2023 I. BTS Committee Chair.. Rod Youn& 8arhale Ltd Vice Chair.. John Corcoran, BMB JV (Thames fidewayl Immediote Post Chalr.. Kate Cooksey, Morgan Sindall Elected Members and Trustees 4laffié Relpow15biliiiiY" Communicatior15 Alastair Smith Jacobs Retired 2023 Christoph Eberle Mott MacDonald Retiied 2023 Technical Jérome Furge Mehdi Hosseini Bouygues Travaux Publics London Bridge Associates J Murphy & Sons Limited Retired 2023 Conference Retired 2023 Tunnelling Database Papers & Meeting5 Richard Sutherden Retires 2024 Mike Kin8 Tim Smart MKTunnellinB Limited HS2 Ltd Retires 2024 Awards & Courses Retires 2024 Education Daniel Garbutt Nuclear Decommissioning Authority London Bridge Associates Retires 2025 ITA Lead Divik Bondopadhyay John GTeenhalgh Bethan Haig John Kinnear Retires 2025 Digital Delivery & Logistics, Website Nv Bekaert Sa Retires 2025 Dr Sauer & Partners Retires 2026 Technical jacobs Retires 2026 J3M Construction Training Limited Retires 2026 Russell Mason Bouygues Travaux Publics (UK Branch) Retires 2026 Ken Kwok Co-opted Member5. iompny Jacobs Alastair Smith Communications Sarah Langley John Corcoran Sika Ltd SO, anniversary celebralions Annual Dinner SO, anniversary celebrations T&TI Editorial Advisory Board Annual Dinner BM8 JV (Thames Tidewavl London Bridge Associates Mott MacDonald Ken Spibv Mark Leggett John Scholev Paul Perry Retired Hewson Consulting Engineers Ltd Journalist PHEW Liaison Shani Wallis Media Relations and Publishing Young Members Chair (from 3 November 20221 Young Memberschairlfrom 2 November 20231 George Doulkas Strabag UK Ltd Thomas Macgowan Bedi Consulting Charity no 1017887 BAITIS SuciETY

British Tunnelling Society Annual Report and Accounts 2023 Damian McGirr COWI UK Ltd ITA Executive Cornmittee Patrick Reynolds Roger Bridge Compelo Balfour Beatty Tunnels and Tunnelling magazine Education, Think Deep Institutional Representatives.. Namè kesponsibiiity Pipe Jacking Association Institution of Civil Englneers, APPGI, ITIG Institute of Materials, Minerals, and Mining Sean Martin Murphy Group Bill Gr05e Consulting Mott MacDonal(i Ltd Bill Grose Andrew Hindmarch Donald Lamont Hyperbaric & Tunnel Safety Ltd Health and Safety. Technical 2. Chairfs Report In 2022 we had near normality back to the BTS and the l1￿U5try, 2023 was fully back with the famous Thursday evening meeting"BTS Sausage & Chips" and it was great to see the ICE bar open and to see the ICE staff again. Projects again achleved the preparation and launch, breakthrough and turnoround of a number of TBMS for major project5 such as HS2 and Silvertown, as well as key pro8ress on future procurement announcements, Stonehenge, Sizewell C, Coire Glas. Snowdonia, HARP as well as numerous smaller diameter/length utility crossings. Our rnembership saw a change in some areas from 2022, Individual membership both UK and Overseas fell slightly as did student & retired memberships. young members saw a further increase, and corporate membership increased by l. The year saw a full programme of BTS and BTSYM evening lectures being held both in person at the ICE and online via our YouTube channel. Attendance numbers did return to pre covid, we feel this w05 for several feasons: covid working reducing, the ICE Bar & the famous "BTS Sausage & Chip5" being available after staffin8 shortages and then the refurb. Unfortunately we were required to have several meetings in the GIKlfrey Mitchell Theatre, which we filled and especially on one evening we had to have an additional area with a full sized screen to accommodate the overspill. We have had a 8ood range of topics at the evening events and sustained a high level of online viewing. This I feel is allowing the society to enga8e with a wider community. The BTSYM have for another year been fostering links to other tunnelling groups around the world, these of course being dor)e virtually, taking account of the time zones. l am incredibly thankful to all our speakers who have all given their time to come and present to us and share their knowledge and experience, with many having made an exceptional additional level of preparation to help make each of our events a success. The wide an(1 varied Selection of evening presentations not only showcases what our industry can do but it also continues to be a leading light in the knowledge sharing activities of the ICE and it5 A550ciated Societie5. The Annual Dinner was held at the end of April, slightly earlier than usual to accommodate the Kin￿5 Coronation. Table numbers were reduced from 2022 as it had been slightly crowded post covid due to high demand. The evening followed the established format, champagne reception, fine dinner, then the Chairfs address from Rod Young. Our speaker, the football legend Kevin Keegan, focused on his Charity no 1017887 SDGIETY

British Tunnelling SocSety Annual Report and Accounts 2023 career from startin8 at Scunthorpe Utd, to Liverpool. Hamburger SV & Newcastle United. Thanks were gbven to John Scholey for another year of organising the dinner and also to John Corcoran. We held the Harold Harding Prize ¢ompetition for Tunnellers under the age of 33 in April with the winner being Jake Rankin for his paper"Artificial Intelligence for Forecasting Tunnelling Progress". Jake attended the BTS Dinner as a guest on the Chairfs top table and was presented with hls certificate & book. Congratulation5 also to the runners up Ricardo Mania5 & Dr. Agustin Ruiz Lopez. Like other events. the Underground Design and Construction Course was once again held at Warwick University and the Underground Health & Safety Course at the ICE, numbers were back to pre-covid. Thanks to all the industry experts that prepared and presented at both courses. The 2023 James Clark Medal was awarded to Andy Alder, and we presented his award at our lune evening lecture. We held the James Clark Medal Winner's Lunch on 19 October 2023, and it was fabulous to see all the past winners together. so much Tunnelling hi5tory/knowledge all in one room. The 4th edition of the Speciflcation for Tunnelling was completed and publicised as planned on the BTS web51te at the Dec evening meeting as the Technical Sub Committee Chair Chrlstoph Eberle was giving an outline of the specification to us all, and the latest edition 15 available free to download from the BTS website. The Health & Safety and Standards Committee have worked on the British Standards, CEN Standards. Compressed Air Working and ITA Guidance and the documents are at various point of completion. plans for the 50th Anniversary Book continue, the number of photos, memories, Stories and projerts put forward has exceeded expectations and the book size has grown, the result being publication will now be in 2024. The size of book is proving what a history the BTS & Tunnelling Industry has had over the past 50 yrs. The monthly pie chart updates have Shown the amount of tssks reducing a5 it nears completion. Please ensure you place your order5 ready for the delivery later In 2024. The BTS YoLbng Members, group continues to grow& Particularly within the ITA YM and continued to embrace delivery of online lectures. They celebrated National Tunnelling Day/World Tunnel Day, further developing our international links, and held evening meeting and workshops through the year. They have focused on social media campaigns and events to continue to support the younger members of the tunnelling industry. Work on numerous smaller tunnels also occurred through 2023 to facilltate the construction of the mapr projects like HS2 and the Lower Thames Crossing in the form of Micro Tunnelling to enable utility diversions. All of the utility companies are planning increased expenditure in their next AMP periods for the installation of new assets. This part of the industry will become a larger sector of the industry and its imF)Ortance needs bringing to the fore. l Y￿uld like to thank the committee for all their support and effort during my year as Chair. The committee has remained active at all times in progressing the ambitions of the society and l am incredibly grateful for the positivity in approach, a5 well as all the spare time the committee member5 provide to make our society what it is. l am also incredibly grateful to our secretary, Katherine Coldwell, for all her support and work to keep the BTS running smoothly. I finished my summary last year using my words from my"David Wallis Lecture 2022"_ the UK Tunnelling Industry has A Past to Be Proud Off, A Future That Looks Green. Charity no 1017887 TLY4P4ELUP

Brit15h Tunnelling Society Annual Report and Account5 2023 Well. nothing has Changed. if anything it ha5 got better, which will give our Society opportunities to s18nif￿antIY contribute to the Tunnellin8 worklood in the years ahead. 3. BTS Objectives and Communications Alostoirsmith (Chairj. St7rt7h L¢7ngleyi Bethan Hoig. Tim Smart, George Doulkos, Ken Spiby. Shuni Walli5. Potrick Reynolds, Aya Hassan. Communications activitie5 in 2023 focused on preparing monthly adverts for Tunnels and Tunnelling International IT&TII and improving engagement on the BTS social media platfoms. Emails, both to individual and corporate members are the primary method of communication and the efforts bv Katherine Coldwell are recognised and greatly appreciated by the society. A revised contract with T&TI wa5 agreed by the committee and runs for 5 years to June 2028 with a review in June 2026. The cost per magazine has increased from £3 to £4 to cover intreased costs. The new contract includes two full page adverts per edition as well as supporting posts on the BTS Linkedin page. The revised contract was approved in the September Committee meeting. Adverts published monthly in Tunnels and Tunnelling International have continued to be part of the Communicatior)5 Strategy and have been focused each month on publicising upcoming events. The Subcommittee appreciates the work by Divik Bandopadhyaya in preparing the adverts each month. For the social media the BTS operated on the X Iformerly Twitter), Facebook, Linkedln and Wikipedia platforms with the BTYSM running accounts on Facebook, Twitter, Linkedln and Instagram. Duri￿ this year. supported by Martin John from T&TI re8ular posting on the BTS Linkedln page has been a key focus to enhance the wider engagement with the BTS via social media. This has seen a significant increase in followers and interest in posts. The BTS has also offered to BTS corporate members the opportunity to provide suitable posts for the site. YouTube contlnues as the platform for delivery of the online evening lertures. The number of followers/ subscribers on ihe different platforms are given below.. Annual Increase Platform Year Created Followers1 Subscribers ' in Followers BTS Facebook November 2020 380 95 BTS X ITwitterl BTS Linkedln January 2014 December 2021 1581 7001 6925 BTS YouTube January 2018 2410 880 Totsl tlll 31 December 2023 6 Total follower$ gained between L lanuary and 31 December 2023 I Created in 2009 but remalned unused till 2020 t iKlude5 BTSYM kcturesand assoclated subscribers The BTSINRM Working group have provided details and contacts for possible features in the Vision 2025 NRM redevelopment and expect to provide additional support as the redevelopment programme gains pace in 2024. Thank you again to the Communications Sub-committee membersforefforts in 2023. 4. Finance and Membership John Corcoran. This year it was ag￿ed to increase membership fees for 2024 by 5%, to reflect expected among other items, £25k inve5trnent in the BTS website, funding for the BTS at 50 book, an anticipated reduction in Charity no 1017887 B￿lT1￿M SOCIKTY

British Tunnelling Society Annual Report and Accounts 2023 profit for the D& Course, life-long free membership to all current and futu￿ James Clarke Medal Winners, and current 6.1% inflation lat time of June 23 meetingl. An agreement was signed between BTS and T&TI for 5 years from 1/1124 (with a 3-year break clause) to increase the contribution from BT5 to the magazine from £3 to £4 per month, to reflect C05t of living increases. This includes two full page adverts for the BTS, and technical 5UPPOrt of the BTS Linkedln page. Overall cash reseNes increased to £428,656 by the end of 2023 compared to £460,083. with an irnprovement in Net Current Assets to £381.153 from £364,491 at the end of 2022. Within the reserve BTS hold funds on behalf of Think Deep UK which amount to £7.296. Publication in 2024 of the 8TS at 50 book 15 experted to cost a total of £303k. £167k has been received in sponsorship. £93k has already been spent, leaving a predicted further spend of £210k. Income on book sales is estimated at £60k. It is felt that the legacy of the book remains èn extremely worthwhile outlay for the members. The Society agreed to 5UPPOrt several projects durlng 2023- £6k to support Dr Andrew Colvin's dissertation Into the causes of Bone Necrosis: £5k towards CIRIA report on chalk: £10.2k on the 8TS Specification 4th edition publication. ,.Grndè Corporate Member Small (Up to 50 employee51 Corporate Membei Medium150 to 500 employees) Corporate Member Large Imore than s￿ employees) Individual Retired UK StudentlApprentice Youn Member £451.50 £719.25 £1165.50 £85 £32 £20 £42 £568.05 £981.75 £1684.20 £138 £44 n/a £53 Membershlp.. The detail of the current membership lat the end of December 20231 is set out below.. Member Chan8& 2022 2019 2018 Corporate members 79 78 88 82 75 UK Individual members (standard gradel 407 432 433 414 457 461 Students and Retired 66 84 68 69 67 76 Young Members 169 166 150 192 193 199 Total 721 760 735 763 799 811 Corporate members Overseas Individual members 94 102 103 ioi 103 113 Students and Retired Total 107 116 117 114 117 128 Charity no 1017887 gRITIfiH 5DGI£TY

British Tunnelling Society Annual Report and Accounts 2023 5. Evening Meetings Richord Sutherden (Chairj. Divik Bondopadhyoyo, John Greenhulgh. Yel another year with a full calendar of high-quality presentations covering a wide range of topics which have been both well attended and well received. The Committee's and members, thanks go to all the presenters. Attendante in 2023 showed a significant uptick post-COVID with some meeting5 well back to pre- COVID numbers with o maximum in person attendance of 205 with 448 online. This was in January on HS2 Area North .The consistent use of the ICE bar with sponsorship of both food and drsnk has certainty helped the numbers, as has the use of the Telford theatre for most meetings. We held our first joint meeting with the Concrete Society, facilitated by John Greenhalgh, which was a reprise and update of our March meeting. The Concrete Society provided the venue and the BTS provided the speakers. Figur•.' BIS Septembtr Meetln The programme of monthly BTS meetings through 2023 was as follows.. TActure Tltle & Presenter (s) VenueiPlatfomi Attendance 19th Jan A review of the tunnelling activities of HS2 'Area North,. BBV. Vinci Grands Projets. - Jules Arlaud, Guillaume Lefrere Kid5ton Pumped Storage Project, Queensland. Joint with Minsouth. Mott Macdonald Clare Onal Telford/YouTube 2051448 GMT/YouTube 901200 Charity no 1017887 Tutr*4ELUM SOGIETY

British Tunnelling Society Annual Report and Accounts 2023 23° March Geopotymer Concrete in Tunnellin8. Wagners, OTB Concrete & HMJV-John Day. Chades Allen. Richard Sutherden Hardin8 Priie. Jake Rankin- Murphy. Ricardo Manias- Riverlinx, A8UStin Ruiz Lopez- Imperial College North Bristol Relief Sewer Pro}ect. Murphy- Dom Barlow. Adam Evenden Design of Watertight Structures- Can we rely on the self-healing of cracks in Concrete? COWI- Carola Edvardsen Le550n5 Learnt from the MSV IPSVI Fire at H52 Chiltern Tunnels. Align JV- Neil Hancox. Shannon O'Keeffe Highway 401 & 409 Rail Tunnel Project Toronto. Dr Sauer & Partners-Thomas Schwind, Dr Angelos Gaki5, Strabag- Gerhard J. Urschitz Geopolymer Concrete in Tunnelling and other applications. Joint with Concrete Society- OTB Concrete- Charles Allen, HMJV- Richard Sutherden 20,0(X) mm under the sea. Connecting Tunnels under the Bristol Channel. Hinkley Point C- Balfour Beatty- Christoph Huber, James Long A Christmas Jamboree of Tunnelling- Silvertown Tunnel. Riverlinx CJV- David Baggs, Siva Brashanthan, Mikel Goirigolzarri Martinez, Mark Shepherd, Ivor Thomas, Christina Trigle. Telford/YouTube 1401277 13 April Telford/YouTube 731166 25" May 15" June TelfordlYouTube 112124 Telford/YouTube 901200 Telford/YouTube 1421not streamed Telford/YouTube 105/technical issues/not streamed 29153 2nd Nov IStructE 16 No¥ GMT/YouTube 1761125 Telford/YouTube 109149 6. BTS Young Members George Doulkos fchuirj, Alosdoir Froser fPust Cht7irJ, Thom05 Mucgowon fsecretory), Ben Loforgo IProfrssional Development Sub-choirj, Sandeep Singh Nirrnul (Schools & Universitie5 Sub-chairj, Ayo Hoson (Media & Socia15 Sub Chair). Arobel VilcJ5 fBGA Iioisonj. The 8TSYM Committee year 2022123 (spanning November 2022 to November 20231 returned to full- time in person events following the pandemic. We saw increasing in person numbers including one lecture which was standing room only in the Godfrey Mitchell Theatre. Lectu￿5 During the course of the year, the BTSYM held a serie5 of webinars and online workshops- as listed in Table 6-1. Table 6-1- List ol BTSYM Lectures held between November 2022 and 2023 Wenuel Platf¢rm & Prtwrterfsj Vacuum waterproofing membrane 5y5tem: advantage5, features and case studies- Enrico Pave5e (Renesco) London UnderEround Euston Station Enabling tunnels for HS2.. Design and Construction innovations and challenges- Ben Laforga Imott MacDonaldJ & Ben Hubble (Mace Dragados JVI 1610212023 Godfrey/ YouTube 40131 2010412023 Godfrey/ YouTube 112160 Charity no 1017887 TuTrwELUWJ SuciKTV

British Tunnelling Society Annual Report and Accounts 2023 li 810612023 Road Tunnel Operation - John Nicholos Tunnel Monager, Nationol Highways Godfrey/ YouTube 18120 Godfrev/ YouTube 2110912023 Special excavation design for complex anchor wall design 30131 0211112023 BTSYM AGM & November lecture: Can tunnelling ever be sustainable?_ Godfrevl YouTube 53117 Despite the return to the in-person lectures, the committee obseNed lower than desired attendance at the lectures with only two sessions recording greater than 50% of the room capacity. The committee has recognised several contributing factors to this, mainly.. Difficulty reaching all members to inform them of upcoming events, Possibly by focusing on single communication channels like Linked In. Limite¢J coordination between inter-referenced posts from BTS and BTSYM accounts Limited use of other social media such as Instagram and Facebook 'Home workinl made it difficult to attract groups coming together after work and making marketin8 to corporate members less effective. Not achieved to establish "corporate" champions as discussed early in the 2022-2023 temi. To help improve marketing, the 2023 committee relaunched the mailing list on the Mailchimp platform which improves the visual impact of event marketing, allows individuals to self-re8iSter and provides analytics on the number of user5 actively reading emails. Worksho The 2023 Committee saw success in the in-person workshops, with m05t of them filling the room to Its capacity. The possibility to broadcast the workshops was disregarded. It IS thought that keeping the workshops in person only adds value to the membership. The committee held a record of the workshop materials and as agreed with the workshop presenters, subsequently distributed thi5 to it5 paid memberslindividual and corporatel but not to the non-member attendees. It'5 Considered that this add5 value to the mernbership fee. BTSYM'S outreach has been noteworthy, with workshops held with Engineers Ireland, Leeds University, Sister ITAYM groups and even industry leading names such as the software developer Bentley. The BTSYM also held one workshop at Imperial College. Table fv2- Lirt ofBTSYM Workshops hEld between November2022 and 3023 Workshop tltlè & Presenterlsj .Date Attenaees lTry¢rsonlonllne Venue 2022-11-17 BTSYM how to get involved - meet and 8reet ICE- Bra55ey Room 14 2022-12 Joint lecture - GTSYM (Greecel online Approx. 70 2023-01-19 Bekaert ICE- Brassey Room 40131 2023-02 Joint lecture- AETOS Yms (Spain) On-line 50 Charity no 1017887 SDCIÈTY

Brit15h Tunnelling Society Annual Report and Accounts 2023 2023-02-22 Dublin Seminor Engineer5 Ireland 112160 2023￿3-23 Siku Workshop ICE- Brassey Room 30 2023-05-25 Low Carbon Sprayed concrete in SCL Construction ICE - Brassey Room 26 2023-06 Joint lecture - J-YMA (Austrioj online Approx. 80 In-person at Imperial College l Online ICE- Brassev Room 2023-07￿7 Python Plaxi5-Joint 8TS/BGA 30 2023-11-02 Concrete injettion 24 The BGA Liaison introduced the inaugural Advanced Design Course in collaboration with the BGA ECG. Thi5 could be maintained. Imperial College provided the venue and Bentley the software. Schools and Universities The Schools and Universities sub-committee arranged numerous school visit5 and collaborated with educational and Social or8anisations= Tunnelskills, Construction Youth Trust, and Think Deep Nigeria, enjoylng a rich audience. In detail, the S&U visited 4 5thools and the 2-day mentoring programme led by the S&U Sub-chair and the BTSYM Chair 2023 attratted MO￿ than 120 students from Nigeria. Media Strong representation of the BTSYM in the WTC2023- Chair, Secretary and most of the sub- chairs were presenting, attending and contributed in the ITAYM activities. Significant increase in our Linkedln account, now~ 6K follower5. Significant increase in the YouTube account, now- 2.3K subscribers. Launch of the Mailchimp malling list plarform. now-650 subscriber5 Significant attendance of new possible members at the 2022-2023 BTSYM socials. Table6-2: BTSYM Social Medla Follower5 Statistics Increase Platform Year Created Followers in Followers BTSYM Facebook September 2014 December 2011 iooo +52 BTSYM Twitter 1507 -28 BTSYM Linkedln January 2019 January 2016 December 2023 6000 +635 BTSYM Instagram BTSYM Flickr 470 Total ti1108 Feb 2024 6 Total folbwers gained between l January 2023 and 01 Feb 2024 Conference Charity no 1017887 BAIT19 guGIKTY

British Tunnelling Society Annual Report and Accounts 2023 13 On the 29th of September 90+ Young Tunnellers attended the BTSYM Annual conference, which comprised a day of lectures, discussions and Networking at the Arup's London office with the Keynote Speech given by Michael Devriendt (Associate Director, Arupl and a visit and closure note by Arnold Dix IITA President). This conference would not have been possible without the conference sponsors. The conference c05t5, and the purchase of the merchandise were covered in full by the 5ponsorships- the BTSYM wish to give special thank5 to the followin8 organisations (Figure 6-11= IUF JPuil')01- Siivei IEronze Supporters XL1￿$￿ F*yre fvl.. BTSYM ConferenrR 2023 Spon5(YS Charity no 1017887 TUNNELUMB SDGIETY

British Tunnelling Society Annual Report and Accounts 2023 Fl8ure &2: BTSYM Conlerence 2023 Attendees Site visits & Socials In addition to the workshops, lectures and presentations listed above, the BTSYM organi5ed a number of social and networking events throughout the year. These included: Brunel Museum piivate tour and Social Social - Bank Canterbury Site visit The Canterbury site Visit was well received. with the attendance consisting of several graduates and apprentices who'd never previously visited a tunnel construction site. ¢1.. F￿￿re 6-23.. BTSYM Slte visit to HS2 Canterbry Road Vent Shaft and following Social Charity no 1017887 SuciErY

ritish Tunnelling Society Annual Report and Accounts 2023 15 Figure: 8TSYM Social January 2023 ort to the main committee In addition to the above events, the 8TSYM continued to provide general IT support to the BTS committee by aiding online streaming and managing the BT5, YouTube channel as well as the management ofcontent on the BTS Website. International Tunnellin Da International tunnelling day was muted this year, due to low levels of actlvity from the ITAYM and due UK site visits which were cancelled at short notice due construction related issues at the host. The BTSYM committee has decided to take responsibility for planning the 2024 Tunnel Day to ensure that it isn't left as a last-minute activity for next year's incoming team. 7. Awards Mike Kin9 Ichoirj, John Corcoron. Alustairsmith, Bethon Hoig. John Kinneor. Hordlng Prize 2023 There were 10 entries to the Harding Prize competition for 2023. At the final, the prize was awarded to Jake Rankin for his paper"Artificial intelligence for forecasting tunnelling progre55" His award was presented at the BTS Dinner. Jomes Clark Medol 2023 The James Clark Medal winner for 2023 was Andy Alder. The award wa5 made in retognltlon of hi5 motivational. supportive and inspiring leadership within the tunnellin8 profession. and his ontributions to major projects and the wlder ICE. Charity no 1017887 PRITIS T￿￿￿E￿I 5DttLITY

British Tunnelling Society Annual Report and Account5 2023 James Clork Medal Winner5 Luncheon 2023 The James Clark Me(lal Winners Luncheon was held on 19 Ocrober 2023 at the ICE, and was attended by 40 past winners or their family representative. other past committee chairs and committee members. Ooug AllenbyAword The Doug Allenby Award was established in 2020 and the funds are to be used to award a medal to a young tunneller IBTSYMI annually in Doug's Memory. No award was made in 2023 but an award will be made in 2024. 8. Education Tim Smart (Chair). Mehdi Hosseini, Mike King, Divlk Bundopodhyayu, Roger Bridge, Kate Cooksey, Christoph Eberle. General The BTS Sub-commlttee Chair met with Susan Scurlock the CEO of Primary Englneer, an organisation that works with schools to encourage young people into engineering as a career. With 511PPOrt from Herrenknecht some material was provided to allow them to better articulate tunnelling and tunnel engineering. Going forward. worklng with the BTSYM there will be a plan to roll out the teaching pack. MSC Course The MSC Tunnelling and Underground space course was not run for the academlc year 202212023 due to the impacts of COVID and the departure of Dr Alan Bloodworth from The University of Warwick. The BTS is liaising with other academic institutions to investigate whether there is a possibility of establishing an Msc course elsewhere. Msc Course- BT5 BU￿ary The BTS did not award a bursary in 2023 due to the pause in the Msc Tunnellirhg and Under8round Space at Warwick Universty. 9. Training and Courses Rod Young (ChoNrJ, Mike King. Richard Sutherden, Tim Smort. John Greenhalgh, Russell Mo50n. George Doulka5. BTS Tunnel Design ond Construrtion Course The 2023 course wa5 held from 3 July to 7, July ot University of Warwick and was once again a successful event. A total of 80 delegates attended the course, 5 of whom were students Sponsored by the BTS. Many thanks to all the presenters from industry that gave their time to help make the course a success. The 2024 Course will be held at Warwick University on I to 5 July 2024, although there are limited residential places in 2024 because of work on the accommodation at the University. Charity no 1017887 Tup•JELLWts

British Tunnelling Society Annual Report and Accounts 2023 Figure- 8T5 Tunnel Design & Construction Course 2023 al thÈ University of wa￿ICk B TS Underyround Health ond Safety Course The annual BTS Underground Health and Safety Course was held at the ICE on 21st & 22nd Nov at the ICE London, with 68 delegates attending. A great thank5 to all the presenters from industry that gave their time to help make the course a success. A review of the course content/5tructure was completed during 2023, overseen by John Corcoran, which was well receiveol and a small review to asse55 the outcome of the 2023 course will be undertaken ready for 2024. The 2024 Course will be held at the ICE in London on 18th and 19th November 2024. Charity no 1017887 TuNKLL*4

British Tunnelling Society Annual Report and Accounts 2023 Figure: 8TS Underground Health &Saf•ty Cwrse 2023 at One Great Str•et Tunnel Survey Course No Tunnel Survey Course5 were arranged during 2023, a suitable location to hold the course has now been found and plans will progre55 for a Course in 2024. 10. Tunnelskllls (Rod Young reportingj. ACHIEVEMENT5for 2023 using the Tunnelskills Volues.'_ l. Growth- We identify and develop fvture training needs and improve the tralnlng provision Infrastrurture, while promotlng the industry and the work of TunnelSki11s In 2023, a Tunnelskills Working Group developed a new Training Standard and qualification for Overground Spoil Removal Conveyor Operations. The Standard and qualification have been developed. approved for CITB Grant, accepted by the Regulators and released to the Awarding Organisation In December 2023. Throughout the year Tunnelskills promoted tunnelling specific trainin& qualifications and funding for these, demonstrated by a significant increase in uptake of the CITB grants by tunnelling employers. The City & Guilds 6151-02 Tunnel Entry and Emergency Procedures qualification, between 2018-2021, only two employers claimed a total of £17k, but sinte launching an active CITB/TunnelSkills campaign from early 2023, eleven employer5 have claimed over £430k in grants for this qualification. 2. Sustalnablllty- We develop. malntain and promote a training and competence framework to 5UStain the Industry for future Eenerations A key actwity for Tunnelskills is the management and maintenance of National Occupational Standards INOSI as these form the basis of many of the accredited tunnelling qualification5. The review and update of these standards was successfully covnpleted by a team of several members of Tunnelskills in July 2023, supported by the CttB Standards Team. Also members supported a range of TSTS related Charity no 1017887 TL￿NE￿￿] So￿lETT

Britlsh Tunnelling Society Annual Report and Accounts 2023 19 WorkinE Groups in this redevelopment, supported by Site Safety PluslCITB. The redevelopment activity is expected to be complete in the summer of 2024 and a riBorous testing and piloting phase will precede the launch later in 2024. TSTS continues to equip the tunnelling workforce with the essential training and knowledge required to woik below ground, with over 7Crf) achievements in 2023. The new Multi Service Vehicle IMSVI CPCS qualification developed by Tunnelskills and released for delivery in 2022 continues to demonstrate competency and promote operational safety with over 28 achievements in 2023. 3. Innovation- We accelerate skllls development to respond to new developments in an Innovative way In 2023, Tunnelskills worked with members Danny Sullivan Group to promote a new funded training offer- the ILM-accredited Leadership and Management course. Take up of this funded training offer has been limited. however, several members have continued to develop their own in-house supervisory development programmes, including Align JV and J. Murphy & Sons Ltd, and have shared their knowledge and experience with the wider Tunnelskills Forum. Tunnelskills innovatwe Immersive Learning resources developed between 2019 and 2022, continue to benefit the industry and have been used to attract and inspire new talent into tunnelling at careers and employment events across the UK. In 2023. ten events hosted or attended by Tunnelskills and it5 members have been enhanced by these immersive resources 4. Incluslvlty- We work with rtakehol(lefs to Influence and improve the induslvlty of trainin qualifications and access to the settor Work experience placements are an invaluable tool benefiting potential new entrants to the industry and employers alike. TunnelSki11s has supported member employers to provide a range of tunnelling- fotused work experience placements ocr055 the UK totaling 32 across the year, of which nine have resulted in employment andlor apprenticeships. The number of new tvrtnelling apprenticeship starts has ex￿eded targets thi5 year with 24 new apprentices having CoMmen￿d their learning programme. 11. Health and Safety and Standards Donald Lomont. 2023 has again seen considerable activity on standards, guidance etc. The use of virtual meeting5 ha5 maintained the increased frequency in European meetings due to the lack of travel involved. British Standards BS 6164=2019- nothing to report. CEN Standards G4 Yunnel borin CEN TC151 machine safet UK Delegation comprises Donald Lamont, Sean Martin, Steve Parker. The revision process for ENS 16191112110 tontlnued throughout 2023. The provisional revised versions prEN 16191 alon8 Wlth prEN 12110-1 and prEN 12110-2 were published for CEN enquiry and around 430 comments were received. It was particularly noticeable the number of comments from Fran particularly as France had participated in the revision process. A number of comment resolution meeting5 were held and by the end of 2023. All comments on EN 12110-1 and EN 12110-2 were resolved. 9-month tolerance requests (extension of the drafting period) have been approved for all three standards. Unsurprisingly, negative assessments of and comments on all three document5 were also receNed from the CEN HAS Consultant. They still have to be resolved. Charity no 1017887 8*iTIS TUNNELUX SuGI£TT

British Tunnelling Society Annual Report and Accounts 2023 MSV standard - the first draft of the technical requirements for diesel engined MSVS wa5 completed in 2023. The ZA Annex, table of hazards and verificatlon table remain to be drafted. A second part dealing with battery powered MSVS Is planned to follow. C196 WG2 "Minin CEN UK Delegation comprises Donald Lamont, Clive Hannaford. Revision of EN 1889-2 "Locomotives for mining and tunnelling" continued. This standard is being revised to address both diesel powered and battery powered locos. The revision of the technical requirements Is around 75% complete. Compressed Alr Working Group Chairman-Roy Slocombe. The Compre55ed Airworking Group met twice during 2023. One meetingwas devoted to Report 10 and the other to a demonstration of a self-administered Doppler monitoring systern. ITAIBTS CAWG Report lo-the HPCAGuidelines. The major revision of the guideline on high pressure compressed air, published jointly with the International Tunnelling Association, has gone for peer review within ITA and publicatiori is expected in the first half of 2024. Thi5 document - ITA Report 10 - has now reached a level of maturity whereby future revision on a 5-year cycle should now be sufficient. ITAIBTS CAWG Report 20- the "Client guide to Report I￿ has also been revised. UHMS Paper To draw the attention of the wider international hyperbaric medical and diving ommunity to recent developments in tunnelling hyperbarics, a group of CAWG merTbbers have written paper on "Advanced hyperbaric techniques in tunnelling, which has been accepted for publication in the journal of the prestigiou5 Undersea Hyperbaric and Medical Society in the USA. Other ITA ArtNity Donald Lamont retl￿d as Animateur of ITA WGS after 22 year5 in post. He was awarded an ITA Distinguished Service Medal for his service. He was a150 awarded the ITACET Foundatiori Bronze Medal for 2023 for his contribution to health and safety training and education within ITA. Report 14-"Guideline on the provision of Refuge Chambers" revision and updatlng of the ITA Report 14 on refu8e chamber5 is continuing under UK leadershlp. This is partly necessitated by changes in chamber dirnensions set out In prEN 16191 along with increased levels of remote control and automation being incorporated into chamber desigF). Guideline on Human Factors- work restarted on this document during 2023. BTS Guldance on Fatlgue- Led by Dan Garbutt Tunnel Industry Steering Group ITISGI Shift Fatlgue Guidan¢e Development The TISG on shift fatigue guidance wès established in November 2022 in acknowledgement of the lack of 8uidance that is focused on the sleepiness and heat stres5 imparts on fatigue of working underground and Indeed any outdoor occupation. The TISG is formed of primarily BTS members from acr055 the spectrum, client, consultant, and contractors. both small and large diameter tunnellers as well as links to the health and safety and skllls sector within tunnelling and academia. Its first effective meeting was in January 2023. Objectives of the TISG To understand the influence of and links between sleepiness, fatl8ue, the thermal environment, and human error proneness as they arise from current shift lengths and patterns and to produce tunnelling industry guidance on shift length and shift pattern with a view to improving Charity no 1017887 TUWELUNiI SOEIITY

British Tunnelling Society Annual Report and Accounts 2023 21 worker welfare and well-being alon8 Wlth reducing their error pronene55 through consideration of sleepiness, fatigue, and the thermal environment. Outcome To produce client lead guidance development on shift length and patterns with a view to improvin8 worker welfare and well-being, along with reducing their error proneness through consideration of sleepiness, physlcal and cognitive fatigue, and the thermal environment. Positively impacting productivity and efficiencv. The TISG has already Secured £25.OCQ in funding from the Nuclear Decommi55ioning Authority and the BTS has commltted a sum of £IOk to support development of the work. Thi5 is mainly through supporting the publication of the academic study that will undefpin the guidance. 12. Technical Sub-committee Committee members.. Iwike Kin9, Richardsutherden, Doniel Gorbutt, Bethun Hoig (cht7ir), John Kinnear, Jerome Furge. Co-opted to main committee.- Christoph Eberle (past choir), George Doulkas, Donald Lumont. Shani Wollis, Poul Perry, Seun Iwortirt, Andrew Hindmorch. Co-opted to tethnical 5u&committee.- Omar Mohommed. Benoitjones, Ch¢7rles Allen, Thomos MacGowan (BTSYM choir). The Technical Sub committee has completed/is working on the following principal tasks- BTSSpecifi¢atlon lor Tunnelling 4 edition.. The 4, edition of the Specification for Tunnelling was published in December 2024, after a period of final proofing and setting out. It has been made available for free public acce55- a model that will be considered for other publitations. B TS SCL 8e5t Prartice guideline.. This has been reviewed and contact has been made with Emerald publishing to see it published in 2024. BTS Monltoring Underground Con5truction- A best prartlce Guide: a sub-group (led by O Mohammed) has been established to update this document with advances in the field Since last publication. Contact with Emerald made and proposal form drafted. Target publication early 2025. BTS Segmental Ilnln8 production control guidance: a sub-grovp Iled by J Kinnearl ha5 been established to create a document that build5 on ITA segment318uidance to address issue5 of QA/QC during segment production. To include gaskets. Thi5 will be a short pamphlet rather than full book. BTSYM carbon calculationslhow to guides: Further to ITAtec sustainability sub-groups arbd the Pipejack Association carbon calculator it is proposed that the BTS prepare examples to aid the industry and allow bench-marking. BTS technical 5ub-commitee to provide guidance to the 8TSYM who will lead this activity (under T MacGowanl. 13. APPGI Bill Gr05e (Chair),- Rod Young, Kote Cooksey, Doniel GL7rbutt, Tim Smart. Bethon Haig. The All-Party Parliamentary Group for Infrastructure IAPPGII 15 run jointly by the ICE and the BTS, having merged the BTS'S APPG on Underground Space IAPGUSI several years ago in order to focus Parliamentarians on fewer overlapping All-Party groups. This enables BTS to concentrate on site visits and projects and initiatives of Interest to its member5 and parliamentarians whilst leaving the administratlon of the Group and broader ICE policy aims to the institution's Public Affairs department to manage. The stated aim of the group is to 'highli8ht the importance of infrastructure, engineering and the use of underEround space to the economy and society, and to hear from experts and discuss matters arising. Charity no 1017887 TLMELUNG 5oCIKfY

British Tunnelling Society Annual Report and Accounts 2023 22 Moving the meetings from late afternoon to 8-30am in 2019 increased attendance from Parliamentarians and the meetings were held frequently enough to have gair)ed Some momentum. Several meeting5 were held during 2023, but no site vi51ts. The people invofved, and the activities of the last year, can be found at https.'//www.ice.orB.uk/news- insight/policy-and-advocacy/all-party-p3rliamentary-group-on-infrastructure-appgi. 14. Website Divik Bondopadhyoyo (Chair) & Alasdair Fraser. BTS Website The updated BTS website Iwww.britishtunnellin .coml domain is renewed for another year, along with Zoho Corporation as the mail exchange provider. The website domain remains in direct ownership of the BTS, along with britishtunnelling.org as a spare. Please visit the website for further details. Tunnels Datsbase Ken Spiby. The tunnels database is still not available to Member5 or to the public. It has effectively been put on hold whilst the team concentrate5 on completinE the 50 Artniversary book. However. as a part of research carried out for the book, the database ha5 been substantially extended with both earlier and later projects. A substantial photo library has also been built up. Proposals for how best to use these for the benefit of our Members wlll be sought after the publitation of the book. 15. 50th Anniversary Book Working Group.- Ken Spiby (Chair), Sarah Longley. John Corcorun, Anita Wu,- Ben Shiels,. Divik ondopadhyayo. We have continued to work hard on the completion of the book- Tunnelling Tales= Fifty years of the British Tunnelling Society". The table below compare5 progress at the of end of 2023 with progress at the end of2020, 2021 and 2022.. Progre5S end 2020 Progre55 end 2021 Progress end 20Z2 roEress end 023 No of stories written lof totsl no anticipated) % of stories written 173 lof 3301 381 lof 5421 502 lof 5851 62 lof 5901 53% 70% 86% 5% Total no of authors Almost 2CMJ 260 48 No of pages set lof total pages anticipated) % of pages set lie laid out in final So lof 7761 ICKJ lof 8661 407 lof 866) 96 lof 8801 12% 47% format) Chapters page set lof total chapters) O lof 171 O lof 181 7 lof 161 2 lof 161 Charity no 1017887 TLwF4ELU SoGI&TY

British Tunnelllng Society Annual Report and Accounts 2023 23 At the start of 2023 we believed that we were close to reaching a deal with ICE Publishing to print and sell the book, but ICE Publishing seemed to have stopped returninE our calls. At the end of May 2023 y￿ discovered why.. the previous week, ICE Publi5hin8 had been sold to Emerald Publishing. A'for infomiation, letter we received, assured us that we did "not need to do anythin¥, and that Emerald "will be in touch" This remains the only communication that we received from Emerald land from what remains of ICE Publishin81 in 2023, as both continued to ignore our calls and emails. We therefore have had a very late switch to 'self-publishlng', seeking quotes for printing and for storage and distribution. Thi5 has inevitably delayed the printing and distribution of the book by several months. The programme for 2024 is therefore.. January= modifications to the BTS website to handle book orders January: conclude negotiations with printer5 and distributors Early Feb.. Agree the selling price of the book Mid Feb= Open the BTS website for book sales End May.. C105e sales Early June: Finalise the number of copies to be printed Augu5t= print lin Italy) September.. distribute In order to ￿mOVe the risks to the BTS of over-ordering Ipaying for unsold copies) or under-ordering Ipaying a premium price for a small order and again for a reprint) we will be selling as 'pre-orders' only. Pre-orders must be ordered and paid for via the BTS website on or before 315t May 2024. We are planning a major advertising carnpaign for early in 2024 to ensure that this message is understood, and to encourage the buying of the book. The number of copies that we then order will be made up from-. the number of pre-orders received,. and our commitments to provide free copies Isponsors, organisations we wish to provide with copies, volunteers, etcl. We will not be able to provide free copies to all lor indeed, to any) author5- there are simply too many). 16. T&T Editorial Advisory Board (EAB) Mark Leggett (Chair), Ken Spiby, Kute Cook5ey. Charles Allen, Divik Bhandopodhyt7yo, Roger Bridge. Rosa Diez, Mehdi Hosselnl, Benoitjones, Donold Lamont, Dovid Terry, Ivor Thomos, Russel Mason, Ken Kwok. The editorial meetings have been in person as well as virtual during 2023. The BTS Communications Slbbcommittee and T&T have worked particularly well durlng the year to ensure the promotion of Tunnelling achievements and events both in the T&T publication and through T&T's Linkedln page. Mark Leggett (past chair BT51 undertook the Chair of the EAB for 2023. The BTS is very grateful to him for his work as Chair. We welcome back Eddie Woods as EAB Chair for 2024. The focus for 2024 will be to re-invigorate the EA8 and further strengthen the relatlonship between the BTS and T&T. 17. International Tunnelling Association Doniel 6rJrbutt. Member Nation Representative This year the ITA Affairs Lead and Member Nation Representation role wa5 taken up by Daniel Garbutt. ITA Executlve Coundl Damian McGirr was successfully elected to the Executive Committee (Excol of the ITA at the 48 General Assembly, meaning he would be unable to continue in the previous position as per the bylaws of the Association. Damian continues with the BTS committee co-opted as ITA Exco liaison. ITA Exe¢utlve Director Charity no 1017887 RITIS TuwJELUP43 5oEIiTY

British Tunnelling Society Annual Report and Account5 2023 24 The ITA this year has also undergone change in its Sec￿ tariat with the retirement of Olivier Vion as Executive Director who is replaced by Roland Herr as of July 2023. Olivier will remain to hand over and continue to support WTC2024 and the ITA-AITES 50th Anniversary celebrations in Shenzhen in April 2024. The ITA notified the member nations in January 2024 that Roland Herr will step down from the positKtyn of Executive Director effective immediately with the function of the role being taken over bv the Executive Committee until further notice. World Tunnellin8 Congress and ITA General Assemblv The 49" General A55embly of the ITA-AITES was held at the World Tunnelling Congres5 in Athens, Greece. This general assembly was notable in that occurred a mere seven months after the previous in Copenhagen, Denmark. A special session was also held pre-congress in March 2023 to brief the member nations representatives on the changes beir)g brought about by the change in leadership of the ITA and the Exco which are all relatively fresh in p05t. During the 49th General Assembly significant changes to the membership and financial make-up of the ITA were proposed, no direct vote was taken at this point. An Extraordinary General Assembly that took place on the 26 September allowed member nations time to di8est and feedback formally on proposals, this meant a vote could be taken on a sufficiently outlined plan. This involved several hanges to the bylaws and a restructuring of the individual Affiliate Membership. These change5 will enable the folknwing: • Create a new class of affiliate ITA client members to capture the interests and aspirations of client organlsations while being sensitive to their peculiar probity and governante restrictions. Create a new class of affiliate individual ITA membership that would cater for those without a member nation or8anisation, and those wanting membership of the International IT Make access to ITA online information Free. Create ￿gIonal promotion opportunilies for ITA supporters alld sponsors. Create ITA scope to expand its membership in countries without existin8 member organisations. Create easier access to ITA for young members. ITA OAITES li j Figure: (Leftl ITA-AITES 2023 General A55embly,' (Rightl BTS Members atlending WTC 2023 in Athens. fjreece BT5-ITA Affalrs and Engagement Strategy The 8T5 Committee through its ITA Affairs SubQommittee has set about outlining it5 objectives and aims within the ITA. The BTS is currently working to provide consistency in its approach to engagement with the ITA to maintain and where appropriate enhance its influence within the Charity no 1017887 BRITISH 5uGIETY

British Tunnelllng Society Annual Report and Accounts 2023 organisation. The primary aim is focused on maintaining the reputation for professional excellence of the BTS and its membership within the ITA. The scientific and engineering community is not immune to changes in politics. As various member natlQnS turbo charge their underground engineering sectors and develop their economies, their contribution and influence within the ITA increases. Other member nation5 that pull back on infrastructure spending may see theif influence wane as their national project pipeline undergoes change. As the UK'S learned society for Tunnelling and Underground Space the BTS has the opportunity to advocate for the contributions and influence of its members Within the IT The strategy is focusing on the key areas which the 8TS membership can significantly contribute to. It is acknowledged that given the size and nature of the sector within the UK not all technical areas within the ITA are representative of the 8TS membership and the overall expertise. There are however area5 that the BTS membership has significant experience within, and it is those that the 8TS should support engagement in, with the ITA. Therefore, providing continued BTS Influen￿ in the development of global technical excellence. ITA publications can be viewed at lilt S.. about.ita-aile5.or ublications Worf(Ing Groups Workin Grou 2.. Research Workin Grou 3.. Contractual Practices Workin Grou 5.. Health and Safe in Works Workin Grou 6.. Maintenance and Re Workin Grou 9.. Seismic Effect5 Workin Grou 11.. Immersed and Floatin Workin Grou 12.. S ra ed Concrete Use Workin Grou 14.. Mechanized Tunn Workin Grou 15.. Un round and Environment Workin Grou 17.. Lon Tunnels at Great De th Workin Grou 19: Conventional Tunnellin Workin Grov 20= Urban Problems Under round Solutions Workin Grou 21: Life cle Asset Mana ement Workin Grou 22 .. Information Modelli in Tunnellin The ITAtech Low Carbon Lining5 Activity Group ITA Young Member Group ITA Sustainability Index SME Group Tunnels COMMIThEES ITACUS (Underground Space) ITA Tech (technical documentation) ITACET (Education and Training) ITACOSUF (Operational Safety Of Underground Facilities) 18. Annual Dinner John Scholey (Choir), John Corcoran. Divik Bandopadhyayo. John Scholey Ichairj, aided most ably by John Corcoran and Divik Bandopadhyaya. Charity no 1017887 1715H TuNtrIELuN

British Tunnelling Society Annual Report and Accounts 2023 Figure= (Left) Speech by 8TS Chair at the 2023 Dinner.. IRightl Kevin Keegan at the 2023 BTS Dinner The Society's 33rd annual dinner was held at The Brewery banqueting ￿ntre in London on Friday 24th April 2023. This had been originally planned for Friday 5, May 2023. However, on 11 October 2022, our plans were thwarted by the announcement that the date of King Charles Ill's coronation would be May 6th! The consensus was that we should not try and hold the dinner on a coronation weekend, particularly as we reckoned hotel prices would sky-rocket and room availability would nosedive. Chair Rod Young asked that it be held in May, but the Brewery had no available Friday evening5 in Mayi thus the 33, Annual BTS Dinner was held on Friday 28th April, the only suitable date available. The after-dinner speaker was footballer & manager Kevin Keegan who certainly held people's attention and remained in the Porter Tun to Sl8n autographs, answer individuals, questions, etc. The attendance was 670, which is not far above the contractual minimum of 625 attendees. This drop may in part be due to the rescheduled event falling on a bank holiday weekend. The organisers are also aware that numbers attènding each dinner reflert the industry workload in terms of ongoing schemes and projects in planning. Profits from the dinner 80 to support the BTS learned society activities. We are particularly grateful to Jacobs, our prime spon50r, whose 5UPPOrt has enabled us to increase this contribution. At the May 2023 committee meeting, John Scholey stated that a sum of £7,772 was generated for society funds. There was again a roving photographer: once again, those attending were given free access to download the resulting images. 19. Institution of Civil Engineers Bill Grose. The BTS continues to have a close relation5hlp with ICE. As one of the largest and most active of the ICE'S Associated Socieiies the BTS is a significant user and beneficiary of ICE facilities including meeting rooms, lecture theatres, bar and restaurant, and secretariat support. The arrangement is via a Service Level Agreement which continues to be reviewed annuallv. ICE encourages 8TS to focus on technical projects and to seek funding assistance from the ICE Enabling Fund. The ICE regularly refers tunnel-related media queries to BTS committee members and relies on our advice and expertise in such matters. These referrals have resulted in senior BTS members appearing on TV. on radio and reported in the national, local and technical press. The BTS and the ICE continue to jointly run the All-Party Parliamentary Group for Infrastructure. Charity no 1017887 gRIT18H TLW4ELu SuciETY

8ritish Tunnelling Society Annual Report and Accounts 2023 27 20. BGA Liai50n PaulPerry. 2023 has involved much liaison between BTS and the 8ritish Geotechnical Association with partltular regard to numbers of attendee5 at Evening Meetings at the ICE. as well as ¢ontent and the arranging of a joint meeting in 2024. Paul Perry. member of the BTS committee continues to attend the BGA committee meetings wlth regard to communication betsveen the two group5, to ensure a varied range and good Coordination gn any over-lappin8 projects, such as Tideway and HS2. BGA are continuing with a BGA dinner at the ICE in the second half of the year to provide a leading lecture, dinner and 'networkin¢. Thls Is It) a simllar style as the BTS dinner, 21. Reserves Poliry The Trustees policy for reserves is for there to be at least the equivalent of 12 months expenditure, this will ensure sufficient fund5 will be available to meet the needs of the Society. BTS reserves at the end of 2023 are £381,153. Independent Examlnen The audit requirement for a Charity such as the BTS is for an'independent examination, of our account5. Thi5 independent examination is undertaken by Lindeyer Francis Ferguson Ltd. We have been satisfied with the service provided to date and we propose that thls relatlonship continues for the forthcoming year. Trustees. responslbllltlesfvrthefinandolstotements The trustees are required to prepare financial statements for each financial year which give a true and fair view of the state of affairs of the charity and the incoming resour￿$ and applicatlon of re50urces, includlng the net income or expenditure. of the Charity for the year. In preparing those financial statements, the Trustees are required to: Select suitable accounting policie5 and then apply them consistently. Make judgement5 and estimates that are rÈ350nable and prudent. State whether applicable accountlng standards and statements of recommended practice have been followed, subject to any materlal departures dlsclosed and explalned In the flnancial statements. Prepare the financial statements on an on-going cOn￿rn basis unle55 it is inappropriate to presume that the Charlty will continue In business. The Trustee5 are responsible for keeping proper accounting records which disclose, wlth reasonable accuracy, at any time, the financial position of the Charity and which enable them to ensure that the financial statements comply with the Charities Act 2011. They are also responsible for safÈguardlng thè assets of the Charity and hence for taking reasonable steps for the prevention and detection of fraud and other irregularities. The Trustee5' Report overleaf was approved by the Committee and was signed on its behalf by.. Mr Rod Young Chalr of the Britlsh Tunnelllng Society Date of Approval: 4 In 8roi?IB Charity no 1017887 SucitTY

British TunnellSng Society Annual Report and Accounts 2023 22. Legal and Administrative Information The British Tunnelling Society wa5 formed as an unincorporated association by the Constitution adopted on 23 September 1971 and as amended on 21January 1993, 16 May 2002, 17 May 2012 and 20January 2022. The Society became a registered charity in March 1993. The Charity number is 1017887. The principal and registered office of the charity is= One Great George Street Westminster London SWIP 3AA Names and addresses of other relevant organisations OT per50ns-. Bonker5 National Westminster Bank CCLA Investment Management Limited St. Alphage House 2 Fore Street Strand Branch PO Box414 38 Strand London London WC2H 5JB EC2Y 5Aa Solicitors Solicitors are appointed from time to time as the need arises. Examiner Jonathan Healey FCA Lindeyer Francis Ferguson Ltd North House 198 High Street Tonbridge Kent TN9 IBE Investment Advisers Investment advisers are appolnted from time to time as the need arises. Charity no 1017887 B￿lTI￿ YUWELLIN

British Tunnelling Society Annual Report and Accounts 2023 29 23. Trustees Report The Trustees present their report together with the financial statements of the British Tunnelling Society (the 'Society'l for the year endin8 31st December 2023. The financial statements have been prepared on the accounting policies set out in the financial statements and comply with the current statutory requirement5, applicable law and the Statement of Recommended Practice 'Accountin8 and Reporting by Charitieg issued in April 2005. Organi5ationol Structure The Trustees of the British Tunnelling Society are the ex officio and elected members of its Committee, with the Committee con515ting of elected members, nominated members, co-opted members. and ex- officio members. Ten members of the Committee ère elected by electronic/postal ballot. the result of which 15 announced at the Annual General Meeting. Member5 elected to the Committee serve for a term of three year5 and then retire from the Committee unless they are elected Chairman or Vice- Chairman. A retiring member is ineligible for re-elertion to membership of the Committee for a period of one year after they retire. Two members, one nominated by each of the Institutions of Civil Engineers and Mining and Metallurgy, serve for a three-year term of office and then retire from the Committee unless they are elected Chairman or Vice-chairman. The Committee elects from amongst its members a Chair to hold office for two years immediatelv following the Annual General Meeting. Such election is held at the last Committee meeting of the previous Chairman's term of office. On expiration of a Chairfs term of office, they may serve on the Committee in an ex officio capacity for a period of two years as immediate past Chairman. The Committee elert5 from amongst its members a Vice-chairman to hold office for two years immediately following the Annual General Meeting. Such elections are held at the last meeting of the Committee of the previou5 Vice-chairman's term of office. The Committee may co-opt a member of the Society to the Committee at any time and for whatever purpose the Committee 50 decides. A co-opted member to the Comrnittee will hold office until the following Annual General Meeting. Any casual vacancy, whether in the offices of Chairman or Vice- Chairman or amongst the elected or nominated members of the Committee, may be filled by the Committee, with the approval of the appropriate Institution in the case of a nominated member. A person appointed to fill a casual vacancy will hold office until the following Annual General Meetin& they will then retire. The casijal vacancy will then be filled either by an election, by postal ballot, or by a nominated person from an Institution, as appropriate. A term of office in a co-opted capacity or as the result of an appointment to fill a casual vacancy will not be counted for purpose5 of eligibility for subsequent re-election to the Committee. Any individual member of the Society or nominated representative of a corporate subscriber of the Society or a nominated individual from an Institution will be eligible, except as otherwise provided, for election or appointment or to-option to the Committee. Charity no 1017887 IT15H 5uGIiTY

British Tunnelling Society Annual Report and Accounts 2023 30 Objects ond policies and public benefit The Societ￿$ objectlve is summarised as the advancement of the education of the public in and the promotion of the art and science of tunnelling, including the creation and use of underground space. bv f05tering learning, understanding, experience, interest. and research therein. In furtherance of thi5 the Society.. Provides a forum for the discussion of the problems and techniques of tunnelling by holding monthly meeting5 which are free and open to all interested partles in addition to Society members. Encourages tunnellin8 research and development to improve health and safety of the workforce, reducing both risk to the public and the cost of provision of infrastructure. Provides training courses on a non-profit-making basis to train young tunnellers in tunnelllng best practi￿. Supports a Young Member5 division that embraces the objectives of the Society but focuses towards graduates, school leavers, and students still at school. Supports the development of skills throu8h support to courses such as the Msc in Tunnelling and Unclerground Space at Warwick University. Supports the development of apprenticeships and QCF NVQ qualifications via its work with the National Working Group, TunnelSki115 and the Tunnelling and Underground Construction Academy ITUCAI. Produces and arranges for the publication of papers and reports to dissemlnate information on tunnelling and to provide points of reference. Co-operates with other associations in holding meetings and conferences locally. nationally, and internationally. Is the national representative body to the General Assembly of the International Tunnelling and Underground Space Association IITAI for the UK. Pays its annual membership fees to the ITA for the maSntenance and on-going management of the Association. Maintains liaison with similar associations and individuals in other countries and co-operate5 and participates in the formation. continuance and furtherance of an international society devoted to the interests of tunnelling and of other international. national, or local associations whose objects are allied to those of the Society. Offers specialist a551Stante and advice to H.M. Government. statutory authorities. boards, institutions, and similar bodies to make representations to such bodie5. Does all such other things as are incidental or conducive to the attainment of any or all the above alms. Administration of the Society The bu5ine55 affairs of the Society are administered by a committee consisting of ten elected members, several co-opted and ex officio members together with a representatlve from the Institution of Civil Engineers. the British Geotechnical Association, the International Tunnelling and Underground Space Association, the Institute of Materials, Minerals and Mining and the Pipe Jacking Association. The 2023 AGM saw vacancies arise in the Committee, due to the retirement of elected members. This year there were 4 elected member vacancies and 4 BTS members were appointed to se￿e from the 2023 AGM for a period of three years. They were.. Bethan Haig, John Kinnear, Russell Mason and Ken Kwok. In addition, the Committee reqve5ted that Donald Lamont, Shani Wallis, Ken Spiby, Roger Bridge, Patrick Reynold5 and John Scholey continue their roles as co-opted members of the Committee, which they agreed to do and welcomed Alastair Smith remaininE on the Committee this time as a co-opted rather than elected member. George Doulkas took on the responsibility of the Young Members, Chair in 2022, followed by Tom Macgowan in 2023. The British Tunnelling Society is one of the largest and most active of the Associated Societies of the Institution of Civil Engineer5. The Committee deals with its substantial workload by allocating it to sub-committee5 as detailed in their individual reports. Charity no 1017887 ERITIS TLWNUUN SD¢41TY

Brltlsh Tunnelling Society Annual Report and Accounts 2023 31 24. Report of the Independent examiner Respective responsibilities of trustees ond exominer The Charity's Trustees are responsible for the preparation of the accounts. The Charitvs Trustees consider that an audit is not required for this year under section 144121 of the Charities Act 2011 and that an independent examination is needed. It is my responsibility to.. Examine the account5 under section 145 of the 2011 Act; To follow the procedure5 laid down the General Directions given by the Charity Commlssion under section 14515llbl of the 2011 Act; and To State whether particular matters have come to my attention. Bosis of independent ex¢7miner's report My examination was carried in accordance with the General Direction5 given by the Charity Commi55ioners. An examination includes a review of the accounting records kept by the Charity and a comparison of the accounts presented with those record5. It also includes consideration of any unusual items or disclosure5 in the accounts, and the seeking of explanations from you as Trustees concerning any such matters. The procedures undertaken do not provide all the evidence that would be required in an audit and, consequently, no opinion is given as to whether the accounts represent a 'true and fairf view and the report is limited to those matters set out in the statement below. Independent examiner's statement In connection with my examination, no matter has come to my attention.. that gives me reasonable cause to believe that in any material respect, the requirements- to keep accounting records in accordance with section 130 of the 2011 Act: and to prepare accounts which accord with the accounting records and to comply with the accounting requirements of the 2011 Act- have not been met- or ii. to which, in my opinion, attention should be drawn in order to enable a proper understanding of the accounts to be reached. Jonathan Healey FCA LINDEYER FRANCIS FERGUSON LTD Chartered Accountants Tonbridge, Kent Charity no 1017887 SociETV

British Tunnelling Society Annual Report and Accounts 2023 32 BRITISH TUNNELLING SOCIETY sTATEME￿OF FINANCIAL ACTIVITIES (INCLUDING INCOME AND EXPENDfruRE ACCOUNTI FOR THE YEAR ENDED 31 DECEMBER 2023 2023 Unrestricted funds Z023 Restrlcted funds 2023 Total funds 2022 Total funds INCOME FROM Donation5- Dou8Allenby Charitable activities., Subscription5 Income frorn othertrading activitie5'. Royalties & Sales BT5YM Conference Underground Health & Safety Course BTS Course Annual Dinner Sposorship 109.836 109,836 110.932 11.374 1.145 11.374 1.145 92 4.902 6.855 119.310 I(￿.395 250 86,160 98,643 7,170 86.160 98.643 7,170 Inve￿Ments.. Interest 2,660 316,988 2,660 316.988 601 Total Income 351.137 EXPENOITURE ON Charitable activities Postage Meeiing Expense5 and secretarial Subscriptions to other bodies Othertost5 Websit Award & Prlzes Grant ProfessSonal fees 25 21,936 1,087 1,730 138 1,205 9.0(M) 2,940 38.061 25.602 1,128 2,724 30 6,032 18,0(K) 4,500 58,016 25,602 1,128 2,724 30 6.032 58,016 Expendlture on ra151nBfunds Expenses re course and dinner Publiiations Underground Health & Safety Course BTSYM Conference Young Members Committee BTS Conference Bad Debt 175,657 50,268 10,471 4,124 1,658 132 175,657 50.268 10.471 4.124 1.658 132 171,218 40,212 6,590 4,176 746 133 43,920 242.310 242,310 266,995 Totsl èxpendoture Net income and netmovemtnt In fvnds 3CQ.326 16,662 3(K),326 16.662 305,056 46,081 RECONCIUATION OF FUNDS Fund balances broughtforward l January 2023 357,195 7,296 364.491 318.410 Fund balancè5 carrled forward 4131 De￿rnbel 2023 373,857 7,296 381,153 364,491 The statement oFlinan£ial adivity includes all gains and losses in the period. All income and expenditu￿ derive5from contlnuing artivities. Charity no 1017887 DCIITY

Britlsh Tunnelling Society Annual Report and Accounts 2023 33 BRITl5HTVNNEW￿socIETY BALJNCE SHEET ASAT31 DECEMBERIQZJ 2023 CURRENfASSErs Debtors Shorttsrm deposits Cè5h atbank 171,176 6Z598 365,30B 120,821 62,585 397,498 S99PB2 CURRENf UAOIUTIES Credlttsrs= Amounis fallin8 due wthin oneyear 217?29 216,413 I*T CUIIREMT ASSETS 381,IS3 364A91 IPICONf FUNDS iJnr¢$trlcttd Restrlrted 373857 7296 357,195 7,296 381,153 364A91 Thè note$•n p•Ee 3410 36form partof these finan￿81 ststements. AFprovgJ bythe commlttee on.. 24thd s4ned on its behalf by.. Rod Youn8- Chair Charity no 1017887 BAiri• SrJryETY

Brltlsh Tunnelling Society Annual Report and Accounts 2023 BRITISH TUNNELLING SOCIETY NOTES TO THE FINANCIAL STATEMENTS FOR THE YEAR ENDED 31 DECEMBER 2023 Accountlnz Policies Accountlng Conventlon The financial statement5 have been prepared in accordance with the Financial Reporting Standard 102 leffertive January 20191 IFRS 102} and the requirements of the Statement of Recommended Practice ISORPI applicable to charities preparing thelr account5 in accordance with the Financial Reporting Standard applicable in the UK and Republic of Ireland IFRS 1021 leffective l January 20191 (Charities SORP FRS 1021. The British Tunnelling Society meets the definition of a public benefit entity under FRS 102. Assets and liabilities are initially recognised at historical cost or transaction value unless otherwise stated in the relevant accounting policy notelsl. There are no material uncertainties about the charity's ability to continue, and $0 the going concern basis of accounting has been adopted. Income All subscriptions and investmenr income is accounted for when received. except in the case of SLSbscriptions which are specifically stated to be in respect of an ensuing accounting period. No credit is taken for subscriptions unpaid at the balance sheet date. Empenditure Expenditure is recognised when there is a legal or constructive obligation to transfer resource5 to a third party, settlement is probable and the amount can be measured reliably. Expenditure is included within the Statement of Financial Activities on an accruals bas15. Fund Accounting Unrestricted funds can be used in accordance with the charitable objectives of the Society. at the discretion of the Trustees. Restricted funds can only be used for the particular restricted purposes within the objective5 of the Society. Taxatlon The charity is exempt from corporation tax on its charitable activity- Charity no 1017887 BRIT15 YUtr•4ELL1￿ SOCIETY

Brit15h Tunnelling Society Annual Report and Accounts 2023 35 BWJTISHIUNNEIUNG SC<Tr IIOTESTOTME HN•ACIALSTATEMENTS FOR THE IURENDEO JI ￿¢EMBER Z013 Member's suty5¢rtkn5 Thegeographical analysi5 of gJbxriptiOn$ Is èsfollows.. Urn￿ed Kin8dom RÈSt of theWork4 91449 17,387 92,236 18,696 109,836 IIOS32 D•btors 2022 Debtors Prepayments ICE Intercornpanv 11.297 144.136 15.743 112K03 8,7a8 171,176 120.821 Credttors Purchase Ledger Cotttrol Account bscrlptions In advan Accruèls OtherCreditor5 Rtteipts In Advèn 10.765 30258 4.C60 s￿56 166.3(X) 10.480 27Jla 5,160 7.160 166.300 217.929 216,413 Within Ihe arnountforothEr creditors 8T5are holdingE6,013 ofi behalf of Thlnkoeep UK Empknyees Emplowm•nt Costs Thesooety does not employ 513ff dlrectly. of nèt asseti betwThfunds Re#rlrt•d funds uNest￿t&d I￿ndS TOtsI fvJnd5 Fund balances ai YI December2023 a￿ represented by.. Curreni assÉts Current liaiillitlesf311in8duewithin One￿ar 591,786 739S 599P82 1217,9291 373%57 7,296 381,153 Charity no 1017887 TuTrw4EWN UGIETY

British Tunnelling Society Annual Report and Accounts 2023 stat￿￿1 ofmo%ment knfvnd$ Restrkted funds UrwIvkt¢dfur￿$ Total Balance broughtforward at I lanuary2023 357,195 7,296 364A91 NW rnovemenl In funds Fund balafi￿ orrledforward at31 Oecember 2023 16,662 373,857 16.662 7.296 381,153 R¢stvkted Fw•Os The DougAllenbyAward was e5tabHshed In 2020, thelund5 aretts be used to award a rnedal to a wun8 tunneller IBTSYMI annually Sn Dou￿$ Memory. Commtttee Mernbers Committee Members do notand never have receNEd any r￿TrUnera￿on. 2023 2022 Travel and subsistence exptrnses relNbur5ed ¢0 commfttee fftEmbers In.ty.3 trustse5 rElmbursed in 2023. 3 h 20221 1,524 I,Y)7 1,524 Charity no 1017887 TwELLIM3 5orJETY