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2022-12-31-accounts

,Ii': British Tunnelling Society Annual Report and Accounts 2022 James Clark Medal Wlnners lunch BRITISH TUNNELUNG SOCIETY Rod Young. BTS Chalr British Tunnelling Society bts.chair@britishtunnellinB.or8.uk

British Tunnelling Society Annual Report and Accounts 2022 IIIWIII Executive Summary Ring Building on Thume5 Tideway West Executive Summary 2022 was the year of bringing a period of normality back to the BTS and the industry, which was grabbed with 8reat delight. Many projects made significant milestone progress in 2022. including the preparation and launch. break through and turnaround of a number of TBMS for major projects such as H52 and Silvertown. as well as key procurement announcements. Our membership has seen a turnaround in some areas from 2021, Individual membership has not changed, the fall in young members has been reversed to a healthy increase, the same with students/retired members, but corporate membership fell. A150, overseas memberships were constant. The year saw a full program of BTS and BTSYM evening lectures being held both in person at the ICE and online via our You-tube channel, although attendance numbers did not return to pre covid, we feel this was for several reasons.. continuation of the covid working method5, the ICE Bar & the famous "BTS Sausage & Chips" being not available through 2022 due to staffing shortages and then the refurb. We have had a good range of topics at the evening events and su5t3ined a high level of or)line viewing- The full BTS program of events meant we were able to hold the Annual Dinner, demand for places was such that we had 807 diner5 at 78 tables. Crowded but everybody enjoyed the return to normality. The evening followed the established format. champagne reception, fine dinner. then the address from our Chair Ms Kate Cooksey. Our speaker, the television host steph McGovern, focused Charity no 1017887 8RITIBH 5DGIETY

Bf itish Tunnelling Society Annual Report and Accounts 2022 ore on her recent career activities. Thanks were given to John Scholey for his years of organising t dinner, also to Divik Bandopadhyaya for the work he did to get the BTS through the virtual world of Covid. 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, were able to take place, although number5 were lower than pre covid. Thank5 to all the industry experts that prepa￿d and presented. Autumn 2022 brought the BTS Conference at the QEII Centre in Westminster, onty a year from the 2021 event. or the 2020+1 as we called it. It will now return to its bi yearly slot. It was a great privilege for me to present the 'David Wallis Lecture"_ A Past to 8e Proud Off, A Future That Looks Green. The 2022 James Clark Medal was awarded to Ken Spiby and we presented his award at our November evenin8 lecture. We held the Harding Prize. with the wirlner being Christopher Barrett for his paper "The planr)ing and construction of mainline tunnel B connection tunnel" The Dou8 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. The 1st award was made at the James Clark Medal Winner's Lunch on 20 October 2022 to Ignacio Tognaccini-sainz. The 4th edition of the Specification for Tunnelling was completed, the progress of the update was presented at the BTS conference in October 2022, scheduled for publication in late 2023. The Health & Safety and Standards committee have worked on the British Standards. CEN Standards. Compressed Air Workin8 and ITA Guidance. the documents are at various point of completion. Plans for the 50th Anniversary Book continue. the number of photos, memories, stories, projects put forward has exceeded expectation, the book size has grown. the result being the publication will now be in 2023. 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, torporate and committee members and what has been achieved by their voluntary efforts. A51 used in my'David Wallis Lecture. the UK Tunnelling Industry has A Past to Be Proud Off, A Future That Looks Green, which will give our Society opportunities to significantly contribution to that workload. Rod Young BTS Chair Charity no 1017887 ITI9 TuNf4ELuMS

Brltish Tunnelling Society Annual Report and Accounts 2022 Contents BTS Committee............ Chairfs Report....................-................ BT5 Objectives and Communications......... Finance and Membership.. Evening Meeting5. BTS Young Members................................... .13 Awards............ Education...........-..-............. .14 Training and Course5. .14 io. Tunnelskills... -14 ii. Health and Safety and Standard5.. .15 12. Technical SulFCommittee... .16 13. APPGI.......................... -16 14. Website.. . -17 15. 50th Anniversary.................... T&T Editorial Advisory Board IEABI.......... 18 International Tunnelling Association........ 19 Annual Dlnner. .20 .18 16. 17. 18. 19. Institution of Civil Engineers..................... 20 BGA Liaison....... . .20 20. 21. Reserve5 Policy............................-............ 21 Legal and Administrative Information... .22 Trustees Report..... Report of the Independent Examiner..... 266 Statement of Financial Activities.............. 27 22. 23. .23 24. 25. 26. Balance Sheet as at 31 De￿rnber 2022. . 28 27. Notes to the Financial Statements.....-..... 29 Charity no 1017887 BRIT%9 SOCIETY

British Tunnelling Society Annual Report and Account$ 2022 I. BTS Committee Chair.. Rod Young. Barhale Construction Wice Choir.. John Corcoran, BMB JV (Thame5 Tidewayl Immedlate Past Chalr.. Kate Cookseyl Morgan Sindall Elected Members und Trustees Tenii Sarah Langley Chris Pre55dee Sika Ltd Retired 2022 Papers & Meetings Education Construction Industry Research and Information Association Retired 2022 Ignacio Castillo Alastair Smith Skanska Retired 2022 Awards & Courses Jacobs Retires 2023 Communications Christoph Eberle Mott MacDonald Retires 2023 Technical Jerome Furge Mehdi Hosseini Bouygues Travaux Publics Lonéon Bridge A55ociate5 J Murphy & Sons Limited Retires 2023 Conference Retires 2023 Tunnelling Database Papers & Meetings Richard Sutherden Retires 2024 Mike King Tim Smart MKTunnelling Limited HS2 Ltd Retires 2024 Awards & Courses Retires 2024 Education Daniel Garbutt Nuclear Decommissioning Authority London Bridge Associates Retires 2025 Divik Bandopadhyaya Retires 2025 Digital Delivery & Logistics, Website from February 2022. John Greenhalgh Nv Bekaert 5a Retires 2025 Co-opted Members.. Compary Sika Ltd j RespDnslblllty 50 anniversary celebrations Annual Dinner Sarah Langtey John Corcoran 8MB JV IThames Tideway) London Bridge Associate5 Consultant Ken Spibv Eddie Woods Solh anniversary celebrations T&TI Editorial Advisory Board- stepped down during 2022 Annual Dinner John Scholey Paul Perry Retired Hew50n Consulting Engineers Ltd Atkins BGA, PHEW Liaison Alasdair Fraser Young Members Chair(From 4 November 20211, Website from April 2022 Media Relation5 and Publishing Young Members Chair{from 3 November 20221 ITA Affairs Shani Walli5 Journalist George Doulkas Strabag UK Ltd Damian McGirr COWI UK Ltd Charity no 1017887 RITISH 5ociÉlY

British Tunnelling Society Annual Report and Accounts 2022 George Demetri Compelo Tunnels and Tunnelling magazine (until 19 May 20221 Tunnels and Tunnelling magazine (from 20 May 20221 Education, Think Deep Patrick Reynolds Compelo Roger Bridge Balfour Beattv Anita Wu (til April 20221 London Bridge Associates Web51te Insti tutionol Represen tatives.. Company 8arhale Re5ponslblllty Plpe Jacking Association Andy Flowerdav Itll 17 November 20221 Sean Martin {from 17 November 2022} Bill Grose Murphy Group Pipe Jacking Association Bill Grose Consulting Mott MacDonald Ltd Institution of Civil Engineers, APPGI, ￿1G Andrew Hindmarch Institute of Materials, Minera15. and Mining Donald Lamont Hyperbaric & Tunnel Safety Ltd Health and Safety, Technical 2. Chair's Report 2022 was a fvll year of nomiality after covid. For the tunnelling industry it saw the ramping up of delivery of major project5 such as HS2, Sifvertown and Lower Thames Crossing and the opening of Crossrail- The Elizabeth Line-. The BTS in person events saw a full year's program completed, with the addition of the events continuin8 to 80 Out on the BTS YouTube channel, a future permanent fixture. We had the BT5 Conference back at its correct year, myself presenting with E￿at privllege the"David Wallis Lecture" which I titled - A Past to Be Proud Off, A Future That Looks Green. It was great to see so many friends and collea8ues coming together and catching up at such a fantastic event. It was also great to be joined by so many of our international colleagues including the new ITA President Amold Dix of AustralSa who also presented at the event. The BTS are very grateful to Tunnelling Joumal for managing such a fantastic event with the BTS. l am incredibly thankful to all our speakers who continued to embrace the online experience as well as those that have given evening lectures in person. They 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 and 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 sharin8 activities of the ICE and its Associated Societies. It 15 fantastic to see people back at our in-person events but also that our online presence and lecture views 15 remaining high, this I feel is allowing the society to engage with a wider community. Charity no 1017887

British Tunnelling Society Annual Report and Accounts 2022 The ICE bar and caterlng remaining closed we continued to walk around the corner to Westrninster Arm5 as an alternative. The BTYM have continued fostering links to other tunnelling groups around the world. these of course being done virtually. even taking account of the time zones. Our membership has seen a turnaround in some areas from 2021, Individual membership has not changed, the fall in young member has reversed to a healthy increase, the same with students/retired members, buf corporate membership fell. Also. overseas memberships wa5 constant. The challenge ahead is to further grow our membership which we hope will be easier to achieve with combination of in person events and the new virtual arrangements that everybody is now more comfortable with. We have a150 Continued with our aim to provide information and guidance with our publications, evening meetin85 and training courses. The work on BTS Specification 4th Edition continues which should be ready for publication in early 2023. Our SCL Best Practice Guide will now be worked on now the 4th Edition 15 completed. It gave me great delight thi5 year to be able to h05t the Harding Prize after receiving a substantial number of entries. The prize wis awarded to Christopher Barrett for his paper Yhe planning and construction of mainline tunnel B connection tunnel.. Plans for the Soth Anniversary Book continue at pace and a sample book chapter and example size book were made available to be viewed at the BTS Conference- it is rather overwhelming to see the amount of stories there are to be shared, this has resulted in its publication being delayed into 2023 to incorporate all the stories we have to shère. The monthly pie chart updates have shown the amount of ta5k5 that are need for its completion. Please ensure that you have a space ready on your coffee table. The BTS Young Members, group continues to grow and continued to embrace delivery of online lecture5. They celebrated National Tunnelling Davl World Tunnel Day. further developing our international links. Holding evening meeting and workshops through the year. They have focused on social media campaigns and events to continue to support the youn8er members of the tunnelling industry. The James Clark Medal 2022 was awarded to Ken Spiby, the award was made in recognition of his services to the tunnelling industry through recording the past 50 years of activity of the BTS and the wider tunnelling industry in the"BTS at 50" book. We had two James Clark Medal Winners luncheons 2022, (February and October) to make up for the cancellation5 in 2020 and 2021. It was great to see the return of some winners we had missed catching up with at past luncheons. The Ooug 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. The I" award was made at the James Clark Medal Winne<s Lunch on 20 October 2022 to Ignacio Tognaccini-sainz. The Thames Tideway Project has its last machine in the ground and is progre55ing with secolldary lining and civils Structures. York Potash has been busy tunnelling and shaft sinking and several of the machines have successfully launched on the H52 London to Birmingham route. The launch of the TBM for the 5ifvertown Tunnels occurred. Work on numerous smaller tunnels also occurred, these both on the malor projects like HS2, in the form of 1200m & 1500mm Micro Tunnelling to facilitate utility diversion5, also for the UK Water, Gas and Electric organisations for the installation of new assets. Part of the industry that we should not for8et about. a sector of the industry that needs bringing to the fore. I would like to thank all the committee for all their support and effort during my year as Chair, the committee ha5 remained active at all times in progressing the ambitions of the society and l am incredibly grdteful for the positivity in approach, as well as all the spare time the committee Charity no 1017887 TUNMELU So￿￿ETy

British Tunnelling Soclety Annual Report and Accounts 2022 members provide to make our Society what it is. l am also incredibly grateful to our secretary, Katherine Coldwell. for all her support and workto keep the BTS running smoothly. 3. BTS Objectives and Communications Alostoirsmitlj Ichairj. Kate C1￿kSeY. Jerome Ftsrge. Mehdi Hosseini, Tim Smart. George Doulkos, Ken Spiby. Shani Wullis, Patrick Reynolds, Ayo Husson. Communication in 2022 saw the January and February meeting5 continuè online only with the lecture5 streamed live on YouTube. From March 2022 the lectures returned to hybrid in person with Iwe Streaming. The live streaming remained popular and preferred by many members partly due to concerns over Covid and the fact that the ICE bar and catering facilities remained closed for the duration of 2022. Emails, both to individual and corporate member5 are the primary method of communication and the effort5 by Katherine Coldwell are recognised and greatly appreciated by the society. For the sotial media ihe BTS operated on the Twitter. Facebook, Linkedln and Wikipedia platforms Wlth the BTYSM running accounts on Facebook, Twitter. Linkedln and Instagram. Adverts published monthly in Tunnels and Tunnelling International have continued to be part of the Communications strategy and have been focused each month on publicising upcoming events. The subcommittee appreciates the work by Divik 8andopadhyaya in preparing the adverts each month. YouTube continues as the platform for delivery of the online evening lectures both for online only and hybrid, with the committee meetin85 both online only and hybrid facilitated using Microsoft Teams. The number of followersl sub%riber5 on the different platforms are given below.. Annual Increase Platform Year Created Followersl Subscribers in Followers BTS Facebook November 2020 350 65 BT5 Twitter january 2014 1604 20 BTS Linkedln Oecember 2021 865 789 BTS YouTube January 2018 2084 554 Total till 31 December 2022 6 Total followers gained betsveen I laTruary and 31 tiecember 2022 j CrÈated In 2(NJ9 but remained unused till 2020 t includes 8TSYM lettures and associated subscTilJer$ The Communications Sub Committee has established a storage platfomi for the countless ima8es and photographs that have been collected for the 50, Anniversary Book. Following a personal visit by Kate Cooksey to the National Railway Museum INRMI in YoTk an opportunity for enhancing ￿rne of the Tunnel related exhibits was tabled at the committee meetinB in November 2021. The Communications Sub Committee subsequently reached out to the NRM to see if the BTS could provide any assistance. This proved opportune and p051tive and aligned with the NRM plan for a major redevelopment of the museum site as part of their Vision 2025 strategy. An initial meeting with the Museum Curator. Andrew McLean and BTS Committee members Rod Young and nd Alastair Smith was held at the museum on 2 September 2022. Following thi5 meeting a BTS / NRM workin8 8roup was established to follow up on the collaboration opportunities both for the museum Charity no 1017887 SOGIETY

British Tunnelling Society Annual Report and Accounts 2022 and the option of holding reglonal events at the NRM in the future. The Workin8 group is Alastair Smith, Rod Young, Kate Cook5ey, Tim Smart and Aya Hasan. Thank you again to the Communicationssub-committee members for efforts in 2022. 4. Finance and Membership This year it wa5 agreed to retain the current individual membership fee for a further year, in refleclion of the current economic climate and the cost-of-living challenges. A modest increase of 5% has been added for the corporate membership fees. The rnembership fee for 2022 again included the provision of a hard copy and digital version of Tunnels and Tunnelling magazine. An agreement had been signed between BTS and T&TI for 5 years in 2020 (with a 3-year break clause) and a reduced contributlon from BTS to the magazine. This provides stability and value for money for a significant period. Corporate Member Small (Up to 50 employee51 Corporate Member Medium150 to 500 employees) Corporate Member Large Imoie than SCO employees) Individual Retired UK StudenVApprentice Young Member £451.SO £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 20221 is set out below: chang 2021122 2021 2019 2017 Corporate members 78 84 75 71 UK Individual members 15tandard grade) 432 433 414 457 461 446 Students and Retired 68 69 67 76 72 +16 Young Members 166 150 192 193 199 191 +16 Total 760 735 763 811 780 +25 Corporate members Overseas Individual member5 102 103 ioi 103 113 133 Students and Retired Totsl 116 117 114 117 128 147 There has been an overall increase in UK membership of 3%1735 to 7601. with overseas membership remaining almost stable. 8AITIEM Charity no 1017887 SOGIETY

British Tunnelling Society Annual Report and Accounts 2022 Overall cash reserves have remained relatively stable at £460,08312021- £465,584). It is expected that the majority of the BTS at 50 book costs will be spent in 2023 with a worst-case overall cost1055 of £50.0(J). It 15 felt that the le8acy of the book, even with this potential lo55, remains an extremely worthwhile outlay for the members. Most of the sponsorship for the book has now been receNed and is included in the above figures. Net current assets increased from £318.410 to £364,491 at the end of 2022. 5. Evening Meetings Richard Sutherden [ChoirJ, Soruh Longley (Chair up to Moy2022J, John Greenholqh. George Doulkas. Christoph Eberle The year again has seen an almost full calendar of high-quality presentation5 coverinE a wide range of topics. The Committee's and members, thanks go to all the presenters. We postponed our planned September 2022 meetin8 Out of respect to Queen Elizabeth11. The start of the year saw us reverting to online meetings, but we soon managed to switch to in person meetings back in the Telford Theatre from March onwards with good in person number5 being athieved later in the year, particularly for the Harding Memorial Lecture. With the ICE bar remaining closed. post lecture refreshment5 were held at the Westminster Arms. Meetings have continued to be streamed Iwe online via our YouTube channel with good viewing statistics. The programme of monthly BTS meetings through 2022 was as follows: Lecture Tltte & fveserter fs) ' Attendance 20101 10102 Small Steps Fotward in Sustainable SCL, Ross Dimmock Joint BTS/MinSouth lecture.. Mining Opportunities in Afghanistan, Ismail Amin Design & Construction of a cavern in downtown L05 Angeles, Carlos Herronz Harding Prize, Christopher Burret (wlnnerj. Oliver Dzur, Zhengyao Mork AN AGM + H52 Chiltern Tunnels A Brief Project Introduction & Progress Update from Align JV after l year of tunnelling, Jcmes Reilly. Shonnon O'Keefe Small diameter tunnel excavations & secondary lining construction methodologies at Thames Tideway Central, Nurio Vozquez BTSIICE Specification for Tunnelling 4th Edition, Christoph Eberle Harding Memorial Lecture 2022, Why did that happen? Failures below ground, Mike King Thames Tideway Update 2022, Jim Avant Online only Online only 01200 Olunknown 17103 Telford & online 401283 21104 Telford & online 701158 19105 Telford & online 901270 16106 Telford & online 751200 illio QEII & recorded unknown 17111 Telford & online 1201220 08112 Telford & online IixJ1157 6. BTS Young Members Alasdair Fraser (Chair), Divik 8LTndopodhyoyo fPust Choirj, DovidAshworth (Secretory), George Doulk05 fProfr55ionol Development Sub-choir), Ala Hammad (Schools & Univer5itie5 Sub-choirj. Christy Lee (Medio & 5ociols Sub Choir) Charity no 1017887 T￿￿ELLI1+) 5aciETY

Britlsh Tunnelling Society Annual Report and Account5 2022 io The BTSYM Committee year 2021122 (spanning November 2021 to November 20221 continued to Suffer the impact of the pandemic with reduced but increasing turnout of attendees to in person events throughout the year. During the course of the year, the BTSYM held a series of webinars and online workshops- as listed in Table 6-1. Table 6-1- List af BTSYM Lertures & Workshop held betwRen NOveM￿t 2021 and 2021 vo￿￿/ PlarfoTm Attendees & ￿esenter{S) BTSYM AGM & Lecture.. Explaining Quality Engineering Tiago Geroldes-Rodrigue5 (8Glfour 8eottyJ Validation of Probabilistic and Artificially Intelli8ent Ground Models in Predicting Soil Transitions Rojut Gongmde (Arupj BTSYM-BGAECG Grolsnd Movement Assessment Workshop Oosys Blasting and Drilling Workshop Mehdi Hosseini (London Bridge Associotesj Telford Theatre and YouTiibe 04 Nov 2021 528, 17 Feb 2022 YouTube 466, 10 Mar 2022 MS Teams and YoiiT.Il)e attendees 17 Mar 2022 ICE, 6 attendees Flat or Domed? The selectlon of shaft base slab geometry and a medley of design considerations Si shen ffYPSAJ loin person Attendees Telford Theatre and YouTube 07 Apr 2022 29 Apr 2022 BTSYMITAlym Webinar Tunnelling in Himalayas at S1￿M altitude MS Teams and Youtul)e 40 Attendees Sandeep Nirmal & Ahmed Shaz (RITES Itd.) Underground Construction Chemicals used in Tunnelling and Mining Workshop Robin swift (Normetj Introducing CSM2020- Discrete Event Simulation model for Predictin8 TBM Utilization DrAnurodho Ketwal (WSP USA) Mumbai Metro, Sahar Road Crossover Thomtss Mocgowan (8edi Consultingj & Robin Swift (Normetj University Presentation on Soft Ground Tunnelllng Martin knights (Martin Knights Consulting) 19 May 2022 ICE, 8 Attendees 31 May 2022 MS Teams 50 Attendees 09Jun 2022 Telford Theatre and YouTube 25 Attendees 28 Jul 2022 MSTeams -1 Attendees Belgian Tunnelling Method and its Use in the Madrid Metro Godfrey Mitchell and 'louTubc 37 01 Sep 2022 Attendees Dovid Sizer fA YESAJ Claudio Dioz (A YESA) I Views on Youtube- Live attendee information on available 2 Recording UnavailablelNot Livestreamed Charity no 1017887 Iris TL**I￿￿N 5oEIETY

British Tunnelling Society Annual Report and Accounts 2022 In addition to the workshops, lectures and presentations Ilsted above. the BTSYM organised a number of social and networking events throughout the year which also saw the return of the BTSYM Conference for the first time since the start of the pandemic. On the 20th May 60+ Young Tunnellers attended a day of lectures, dlscussions and Networking at the ICE with the Keynote Speech given by Ivor Thomas. Here it was also announced that Ignacio Tognaccini- 5ainz was to be awarded the inaugural Doug Allenby Memorial Medal. Figure 6-1: BTSYM Confer¢nte 2023 Attondee$ On 8th March the &TSYM organised a very popular site visit to H52 at the West Ruislip Portal Site. Here our Young Members were escorted around the TBM launch site and treated to a presentatlon by the contrartorteam. This was also followed by a social. Charity no 1017887 8AITIs TU￿EL￿N SUGIKTY

Brit15h Tunnelling Society Annual Report and Accounts 2022 4WI Figure &2.. BTSYM Site v15it to H52 West Ruislvp In addition to the above events, the BTSYM continued to provlde general ITsupport to the BTS committee by aiding online streaming and managing the BTS, YouTube channel as well as the management of content on the BTS Website. On the online front, the BTSYM'S social media channels continued to witness reasonable growth over the year as depicted in Table 6-2. Tablè fv2: BTSYM Soclal Medla Followers 5tstlstl Increase Platform Year Created Followers In Followers BTSYM Facebook September 2014 December 2011 948 139 BTSYM Twitter 1535 2S BTSYM Linkedln January 2019 5365 1180 BTSYM Instagram January 2016 471 50 Totsl tlll 01 Feb 2023 6 Total followers gained between l January 2022 and 01 Feb 2023 Continuing with previous years, the BTSYM continued to support the Intemational Tunnelling Society Young Members IITAyml, in the delivery of a 24-hour global Zoom Marathon on National Tunnelling Day/ World Tunnel Day13 December 20201-see Figure 6-2. As Charity no 1017887 ITIS TuNNELUk OBIETY

British Tunnelling Society Annual Report and Accounts 2022 described by ITAYM. the marathon "was an incredibly successful global event with 30 countries involved and more than 3000 participants from all over the globe" The BTSYM'S 30-minute-long session at the marathon provided an update of its activities along with a general update of projects both in their delivery and planning stages within the UK. The recording of the UK slot is available to view on YouTube. Additionally. 2022 saw the BTSYM Past Chair sucCe￿fUllY run for the ITAYM Committee at WTC 2022 which also was well attended by BTSYM members. WORLD TIJNNEL DAY S DECEMBER 2022 CtLEtr#&t4p¢a TuwweL• & ANOUP4D ON Ollvicr in iitoym @itaym35 Figure 6-3 BTSYM Social Mèdia Followers St¥tistiC5 7. Awards Mike Kin9 Ichoirj, Alostairsmith. John Corcoran Hording Prize 2022 The Harding Prlze for 2022 was awarded to Christopher Barrett for his paper"The planning and construction of mainline tunnel B connection tunner James Clark n4edol 2022 The James Clark Medal winner for 2022 was Ken Spiby. The award was made In recognition of his services to the tunnelling industry through recording the past 50 years of activity of the BTS and the wider tunnelling industry in the "8T5 at 5(Y book. JL7me5 Clork Medal Winner5 Luncheon 2022 Two Luncheons were held in 2022 (February and October) to make up for the cancellations in 2020 and 2021. Doug Allenby Aword The Oou8 Allenby Award was established in 2020 and the funds are to be used to award a medal to a young tunneller IBTSYMI annually in Dou8's Memory. The I" award was made at the James Clark Medal Winnerfs Lunch on 20 October 2022 to Ignacio Tognaccirbi-sainz. Charity no 1017887 TupwELUMG SOCIETY

8ritish Tunnellin8 Society Annual Report and Accounts 2022 14 8. Education Tim Smart (Chair), Chri5 Pre55dee (Post Choir). Mehdi Hosselnl, Mike King, Tim Smort. Divik Bondopodhyaya, Mark Leggett, Roger Sridge, Kate Cook5ey, Ivor Thomos, Christoph Eberle. MSC Course The Msc Tunnelling and Underground space course was not run for the academic year 202112022 due to the impacts of COVID and the departure of Dr Alan Bloodworth from The University of Warwick. MSC Course- BTS BU￿ory The BTS did not award a bursary in 2022 due to the pause in the Msc Tunnelling and Underground Space at Warwick University. 9. Training and Course5 Rod Young (Choirj, Alostairsmith. Jerome Furge. Mehdi H05seini. Richard Sutherden, Tim Smort, Divik Bondopadhyoyo, John Greenhalgh,. A1¢75dair Froser. BTS Tunnel Design and Con5trurtlon Course After the cantellation of the past 2 planned courses of 2020 & 2021, the twelfth Tunnel Design and Construction course was held at Warwick Univer51ty in July 2022. The 2022 course was held from 4th July to 8th July. and was once again a successful event, a total of 73 delegates, 5 of which were sponsored students attended the course. A great thank5 to all the pre5enter5 from industry that gave their time to help make the course a success. The 2023 Course will be held at Warwick University on 3 . 7th July 2023. B TS Underground Health and Sofety Course The annual BTS Underground Health and Safety Course was held at the ICE on 21st & 22nd Nov @ the ICE London, with 41 delegates attending. A great thanks to all the presenters from industry that gave their time to help make the course a 5ucce5S. The 2023 Course will be held al the ICE in London on 20, and 21" November 2023. A review of the course content / structure is planned for during 2023 ready for the next course. Online CPD Courses No online courses were held during 2022, after being developed in the covid of 2021,but it will be looked at to be repeated in the future for tontinued members, development -. Introduction to Tunnelling, Health & Safety, Tunnel Design, Finite Element Analysis in Tunnelling. Tunnelsurvey Course No Tunnel S￿￿ev Courses were arranged durin8 2022, a suitable location to hold the course is being sought. 10. Tunnelskills (Rod Young reportingj ACHIEVEMENTSAor 2022.. Tunnelling NVQS, Assessor Tmlning and Qualifitotion Ongoing priority to increase assessor capacity. The founding objective of Tunnelskills was to secure a fully qualified tunnelling workforte to a minimum of a level 2 vocational qualification. Benefits include upskillin8 of workforce. flexibility of in-house assessors, ability to offer to clients. Charity no 1017887 5DciETY

Brit15h Tunnelling Society Annual Report and Accounts 2022 Challenge5 include= the issue of freeing up the time- requlre5 a commitment from the employer. Access to the candidates to be a55e55ed 15 a150 an issue. Tunnelskills has supported the qualification of 9 Assessors to date. 3 new trainee assessors startlng Spring 2023. Leve12 Tunnellrng Operative Apprenticeship Successful qualification of the Align ITG Tunnelling apprentices in February 2023. The training provider of the programme- worked well due to client. contraclor and subcontractor working together to ensure apprentices SUPPOrted within teams and 'rotated' to gain full experience. Two new cohorts planned for 2023- one to start April in London. and one later in West Midland5. Support from main contractors is key to success of these programmes. Tunnelskills has a key role to play in 5UPPOrting identified champions in major projects. Neil Jones of Institute for Apprenticeships and Technical Education IlfATEI has advised a review of the Apprenticeship Standard will take place In 2023, including funding rates for formal trainin& and ha5 requested the support of Tunnelskills in this review. Tunnelskllls Immersive Learning Projert Project Successfully completed in January 2023. GTO thanked Tunnelskills members who had supported with the evaluatlon. The VR resources wlll continue to be used. Any members who wish to borrow a VR headset please contact fto@tunnelskills.org Tunnellinq Safety Training Scheme ffSTS) Tunnelskills Working Group surveyed members and developed recommendations and outline plan to Site Safety Plus. SSP and CITB will presenl to the Management Committee, the process will take up to 18 months. Multi Service Vehide (MSVI CPCS cuteqoryA51 qUalifi￿tIon The new qualification. developed by Tunnelskills member5 and approved for CITB 8rant claims from February 2022, has been a big success- 76 MSV qualifications delivered to date. Around 12% did not pass the theory test. National Occupationolstundards INOSJ in Tunnelllng Operations These standards require a formal and highly regulated review- Tunnelskills offered to support. A Working Group led by Tunnelskills is workin8 on the reviews. 11. Health and Safety and Standards Donold Lamont 2022 has seen considerable activity on Standards, guidante etc. The increased use of virtual meetings has led to an increased frequency in European meetings due to the lack of travel involved. Brltlsh standards BS 6164..2019- towards the end of 2022 two major fire incidents on UK tunnels led to criticism that in both cases, BS 6164..2019 did not provide sufficiently firm ￿¢0MmendatIOnS on the specific circumstance of the incidents. CEN Standards CENITC1511WG4- UK delegation comprised Donald Lamont, Steve Parker, Sean Martin. prEN 16191.2023 the technical revision of the text of EN 16191'.2014 wa5 completed in 2022 and following formal editing and translation, the prEN should be released for CEN enquiry early in 2023. Charity no 1017887 BRIT15bl 5oeitTY

Sritish Tunnelling Society Annual Report and Accounts 2022 prEN 12110..2023- the technical revision of the text of EN 12110..2014 along with the drafting of a new Part 2 to the standard wa5 completed in 2022 and following formal editing and translation, the prEN should be released for CEN enquiry early in 2023. MSV standard - work continued on drafting a CEN standard for MSVS. CEN/TC196IWG2- UK delegation comprised Donald Lamont, CINe Hannaford. EN 1889-2-"Machine5 for underground mine5- Mobile machines working underground _ Safety- Part 2- Rail locomotives" revision of this standard began in 2022. Its scope has been extended to specifically include "tunnelling" application5 hence the 8TS inVo￿ement representing BSI. Compressed Air Working Group Chairman- Roy Slocombe CAWG met twice durin8 2022. It discussed the physiological problems potential for isobaric courkterdiffusion- around switching between breathing a helium rich mixture when immersed in air e. in the excavation chamber, and breathing the same mixture when immersed in the mixture e.g. in the TUP shuttle or habitat. It was agreed there were no concerns over this activity- It also discussed harmonising European requirernent5 over medical examinations between the tunnelling Sector and diving. CAWG has begun active participation in the periodic revision of the ITAIBTS CAWG Reports 10 and 20 ￿lating to high pressure compre55ed air work. ITA Guidance Donald Lamont- Animateur and BTS representative to WG5 ITA WG5 'H&S in Works" agreed at it5 meeting in September 2022 in Copenhagen to revise its Reports 10 and 20 on HPCA work. to revise its Report 14 on refuge chambers and to continue drafting its guidance on human factor5. 12. Technical Sub-committee Christoph Eberle, Mike King. Mehdi Ho55eini, Jerome Furge, Richard Sutherden. Daniel Gorbutt, George Doulk05, Dont71d Lamont, Sht7ni Walli5, Poul Perry* Seon Mortin, Andrew Hindmarch The Technical Sub committee is working on the following principal tasks which are 5ummarised below: a. BTS Specificationlor Tunnelling 4 edition The drafting of the 4 edition of the Specification for Tunnelling was completed in July 2022. Over the summer, the specification was peer reviewed by key stakeholders of the UK tunnelling communlty. The progress of the update was presented at the BTS conference in October 2022. where the second round of peer reviews was announced. At the time of writing this final round has been completed and the results are now incorporated into a final draft, scheduled for publication in late 2023. The BTS Committee has confirmed a strong preference for free public acce55 to the 4, edition. Commercial ne8Otiations with ICE publishing are now being held to establish the term5 undei which this can be facilitated. b. BTSSCL Best Prnrtlce guldellne This document ha5 now been reviewed and is awaiting final drafting and final proof reading. The TSC has prioritised finalisation of the 4 edition over progressing this docurnent whith is now also scheduled to be issued in 2023. 13, APPGI Bill Grose IChairJ,' Kate Cooksey,. Mork Leggett,. Ivor Thoma5. Tim Srnt7rt. Jerome Furge. Charity no 1017887 RITIB Sa￿lETy

British Tunnellin8 Society Annual Report and Acco*Jnts 2022 17 The All-Party Parliamentary Group for Infrastructure IAPPGII is run jointly by the ICE and the BTS, having merged the BTS'S APPG on Underground Space IAPGUS) several years ago in order to focus Parliamentarian5 on fewer overlapping All-Party groups. This enables BTS to concentrate on site visits and projects and initiatives of interest to its members and parliamentarlans whilst leaving the administration of the Group and broader ICE policy aims to the institution's Public Affairs department to manage. The stated aim of the group 15 to 'highlight the importance of infrastructure, engineering and the use of underground space to the economy and society, and to hear from experts and dixuss matters arising- Moving the meetings from late afternoon to 8-30am in 2019 increased attendance from Parliamentarians and the meetings were held f￿qUentlY enough to have gained some momentum. Several meetin85 were heSd during the 2021122 session, but no site visits. A site vislt to HS2 is planned for the next year. 14. Website Divik Bondopodhyoyo L7ndAlosduir Fr05er (Joint Chairj. Anita Wu (Post Chuirj, Ken Spiby, Alastoir Smith, Shani Wollis. BTS Website The updated BTS website Iwww.britishtunnellin .coml was launched in February 2021. with the domain 5Wltching from .org.uk to .com. Likewise the BTS email addresses changed to the domain, with Zoho Corporation as the mail exchange provider. In the last year, the website domain a150 transferred into direct ownership of the BTS. as opposed to being held by the website developer. Please visit the web51te for further details. Evening meetings, conferences, training courses and news are regularly updated wlth archive meetings available to watch online htt britishtunnellin .com event5 evenin -meetin s-archive. Information on BTS publications and a suggested reading list are under the knowledge sertion of the website. The content for sustainability has also been expanded htt britishtunnellin .tom knowled sustainablli The website content has continued to expand for Transforming Tunnel Safety Irrsi htt britishtunnellin .com tts transformin -tunnel-safe to encourage knowledge sharing of lessons learnt. best practice guidance and safety videos on tunnellin8 projects. Tunne15 Database Mehdi Hosseini (Choirj. Ken Splby The tunnels database is still not available to Members or to the public. It has not been possible to get the netessary controlled acce55 to work reliably with the current database structure. Further work on the database was stopped pending the completion of the new BTS website. Three meetir)gs were held in 2021 and further testing carried out. Following further testing, it Is intended that recommendation be made either to modify or re-build. th This has effectively been put on hold whilst the team Con￿￿trate5 on completing the 50 Anniversary book. However, as a part of research carried out for the book, the database has been substantiallv extended with both earlier and later projects. A substantial photo library has also been built up. Charity no 1017887 RITIGH IETY

British Tunnelling Society Annual Report and Accounts 2022 Proposals for how best to use these for the benefit of our Members will be sought after the publication of the book. 15. 50th Anniversary Book Working Group.. Ken Spiby {fhoirJ, Scrt7h Longleyl John CLYcorun, Anita Wu (muter4ity leave).. Ben Shiels. BHMSH TvNNELLty4G 1971- 2021 The BTS celebrated its 50th Anniversary in March 2021, but the Covid pandemic meant that this was much more muted celebration than had been hoped. A book: 'Tunnelling Tales: Fifty years of the British Tunnelling Society" is under production, but we were unable to complete thls In time to publish in 2021 for the attual anniversary. or even in 2022, It is very much hoped that we can publish in 2023. This will mean that the book will be 2 to 2.5 years late. The main reasons for this are.. The book has proven to be much more popular than anticipated and will be around 4 times the slze of the original proposal The volunteers in the main, have full-time day jobs and can only commit a Ilmlted amount of time to the book None of the volunteers has published a book befo￿. and all severely underestimated both the number of steps required. and the time required to complete each task. The table below compares progre55 at the of end of 2022 with progress at the end of 2020 and 2021.. PTogress end 2020 Progress end zozi Progress end 2022 No of stories written lof total no anticipated) 173 lof 330) 381 {of 542} 502 lof 585) % of stories written 53% 70% 86% Total no of authors Almost 2(K) 260 No of pages set lof total pages anticipated) 50 lof 7761 100 lof 8661 407 lof 866) % of pages set lie laid out in final format) Chapters page set lof total chapters) 12% O lof 171 O lof 181 7 lof 161 We are in negotiations with ICE Publishing and others to agree costs for printing and distribution. This will then fix the timetable. but we hope that we can print in time for an October 2023 launch. We will fix the price and open for pre-orders as soon as we have concluded a contract with a printer. Strong pre-or(lers will give confidents for a larger print run, resulting in savings per copy. 16. T&T Editorial Advisory Board {EAB) Edde Woods (Chair). Ken Spiby, Kate Cooksey, Charles Allen, Divik Bhondopodhyoya. Roger Bridge. Roso Diez. Mehdi Hos5eini, Benoitjones. L)ont71d Lamont. And￿W Smith. Dovid Terry. Ivor Thoma5. Charity no 1017887 ruwELLMB SUEIETT

8ritish TunnellinB Society Annual Report and Accounts 2022 2022 continued where 2021 left off. All the editorial meetings have been virtual. George Demetri has stepped down as Editor and has now been replaced by Patrick Reynolds. Eddie Woods stepped down durin8 2022 as the chair of the EA8 and there was a hiatL15 in the latter part of 2022 whilst a replacement ft>r Eddie wa5 Sought. Mark Leggett {pa5t chair BTS) ha5 taken on the Chair of the EAB from January 2023. The BTS is very grateful to Eddie Woods for his work as Chair, particularly during the COVID pandemic. The focus for 2023 will be to re-invigorate the EAB and strengthen the relationship between the BTS and T&TI. 17. International Tunnellin8 Association DL7mion McGirr TheWTC was hosted in Copenhagen in September 2022. Damian McGirr was elected to the Executive Council at the General Assembly Sn 2022 along with 5 other Exco members Klaus Rieker (Germany). Andrea Pigorini (Italy}, Sanya Zlatanic [USA). Monika Mitew-czajewska (Poland}- Sindre Log (Norway. Arnold Dix of Australia was elected as the new President taking over from lenny Yan. Jamal Rostami (Iran), Andres Marulanda Escobar (Columbia) and Hangseok Choi (Korea) were elected to Vice Presidents. I place remained unfilled following the elections. All Df the above will serve a 3 year terni. At the General Assembly in Copenhagen the output from the organisational review undertaken by aTJ external consultant was presented to the Member Nations and the new Exco has now been tasked with the implementation ofthe recommendations from this reporL ITA publications can be viewed at lilt ut.ita-dites.oi" Worklng Groups Workin 3: Contractual Practices Workin 5: Health and Safet in Work5 Workin 6= Maintenance ind Re air Workin 9: Seismic Effects Workin 11.. Immersed and Floatin Worki 12.. S ra ed Concrete Use Workin 14.. Mechanized Tunnellin Workin 15: Unde round and Environm Workin 17= Lon Tunnels at Great De th Workin Grou 19: Conventional Tunnellin Workin Grou 20.. Urban Problems Under round Solutions Workin Grou 21.. Life C cle Asset Mana ement Workin Grou 22 .. Information Modellin in Tunnellin The ITAtech Low Carbon Linings Activity Group tT A Young Member Group rrA Sustainability Index SME Group Grou Grou Grou Grou Grou Grou Grou Grou Tunnels nt rou COMMITTEES ITACUS (Underground Space) ITA Tech (technical documentationl ITACET (Education and Training) Charity no 1017887 BRITIS TUNNELUM SDcirTY

British Tunnelling Society Annual Report and Atcounts 2022 2Q ITACOSUF Ioperational Safety of Underground Facilities) Annual Dinner John Scholey (Choir), John Corcoron. Divik Bondopadhyoyo tld The SOCIe￿s 32 annual dinner was held at The Brewery banqueting centre in London on Friday 6, May 2022. This was the first dinner after a two year break owing to the Covid pandemic. As Lockdown hit after a considerable number of bookings had been tsken for the 2020 dinner, we offered free bottle of wine to every table that stood by their 2020 booking. A total of 35 bottles of 'farewell to lockdown, wine was provided to reward those members that retained their 2019 bookings to thank those members. Demand for places was such that we were unable to keep to our target of 75 tables, accommodating 807 diner5 at 78 tables, of which 26 were tables of 11 people. This did make the room feel a little crowded in places. For the 2023 dinner, we will not exceed 75 tables of 10 people. The evening followed the established format and was thus preceded by a champagne reception. After the usual fine dinner, we were treated to a rousing address from the Chair Ms Kate Cooksey,. this was her second year as BTS Chair, but due to the hiatLJS of the pandemic, her first dinner in that role. The theme of women in engineering was maintained by our speaker, the television host Steph McGovern, although her address focused more on hef recent career activities. On conclusion she acceded to a request from MC John Scholey to a brief display of Irish step dancing to the reel 'Mountain Road, to some great acclaim. Profits from the dinner go to support the BTS learned society activities. We are particularly grateful to Jacobs. our prime sponsor, whose support has enabled us to increase this contribution. There was again a roving photographer; thi5 year, those attendin8 were given free access to download the resulting images. 19. Institution of Civil Engineers Bill Gr05e The BTS continues to have a close relationship with ICE. As one of the largest and most active of the ICE'S Assoclated Societies the BTS is a signlficant User and beneficiary of ICE facilities including meeting rooms, lecture theatres, bar and restaurant, and secretariat 5UPPOrt. The arrangement 15 via a Service Level Agreement whith continues to be reviewed annually. A change in the financing arrangements in 2018 encouraged us to ftjcus more on technical project5 and to seek funding assistance from the ICE Enabling Fund, and this 15 Still the case. The ICE re8ularly refers tunnel-related media querles 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. 20. BGA Liaison Poul Perry This past year has involved much liaison between 8TS and the British Geotechnical Association picking up on Evening Meetings, content and attendance, as well as inpLrt to the Tunnel Asset Management Report being prOg￿SSed by CIRIA. Paul Perry, member ofthe BTS Committee, attends the BGA comrnittee meetings with regard to communication between the two cornmittee5 and discussions on future evening meetings. to ensure a varied range and good coordination on any over-lappin8 projects, making for interesting presentstions for attendees. This year, the BGA introduced a BGA Charity no 1017887 8piTIS 5DCIETY

British Tunnelling Society Annual Report and Accounts 2022 21 Dinner at the ICE in October, which was introduced to assist with "networking" with the intention of making this an annual event, growing in popularity and numbers, year by year, in a similar style as to the ar)nual BTS Dinner. This year also saw Kate Beardsley, Specialist Knowledge Societies Executive take over from Shelagh Fleming (following her retirement) in managing ICE'S 5UPPOrt to the BGA Committee activity. 21. Reserves Policy The Trustees policy for reserves is for there to be at least the equivalent of 12 months expenditure, thi5 will ensure sufficient funds will be available to meet the needs of the Society. BTS reserves at the end of 2022 are £364.49112021- £318,410). Independent Examiners The audit requirement for a Charity such as the BTS is for an'independent examination, of our accounts. Thi5 independent examination is undertaken by Lindeyer Francis Ferguson Ltd. We have been satisfied with ihe service provided to date and we propose that this relatlonship continues for the forthcoming year. Trustees, responsibilitiesfor thefinanelttl rtotements 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 resources and application of resources, including the net income or expenditure, of the Charity for the year. In preparing those financial statements, the Trustees are required to: Select suitable accountlng policies and then apply them consistently- Make judgements and estimates that are reasonable and prudent,. State whether applicable accounting standards and statements of recommended prartice have been followed, 5ubjert to any material departures disclosed and explained in the fSnancial statements.. and Prepare the financial statements on an on-going concem basis unless it is inappropriate to presume that the Charlty will continue in busine55. The Trustees are responsible for keeping proper accounting records which disclose, with reasonable accuracy. at any time, the financial positlon of the Charity and which enable them to ensure that the financial statements comply with the Charities Act 2011. They are also responsible for safeguarding the a55ets of the Charity and hence for taking reasonable steps for the prevention and detection of fraud and other irregularities. The Trustees. Report overleaf was approved by the Committee and was signed on its behalf by= Mr Rod Young Chalr of the British Tunnelling Stitity Date of Approval: Charity no 1017887 Ti4MÈLUNB ScciETV

British Tunnelling society Annual Report and Accounts 2022 22 22. Legal and Administrative Information The British Tunnelling Society was fom)ed a5 an unincorporated association by the Constitution adopted on 23September1971 and as amended on 21January 1993, 16 May2￿2. and 17 May2012. Thesociety 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 or persons= Banker5 Nationèl Westminster Bank CCLA Investment Management Limited St. Alphage House 2 Fore Street Strand Branch PO Box 414 38 Strand London London WC2H 5JB EC2Y 5AQ Solicitors Solicitors are appointed from time to time a5 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 appointed from time to time as the need arises. Charity no 1017887 TurthELUP¥J SDCIETY

British Tunnelling Society Annual Report and Accounts 2022 23 23. Trustees Report TheTrustees present thelr report together with the financial statements of the Brit15h Tunnellin8 Society (the 'Soclety'l for the year ending 31st December 2022. The financial ststements have been prepared on the accout)ting policies set out in the financial statements and comply with the current statutory requirements, applicable law and the Statement of Recommended Practice 'Accounting and Reporting by Charities. issued in January 2019. Organi5(Itionol structure The Trustees of the British Tunnelling Society are the ex officio and elected members of its Committee. wlth the Committee consisting of elected member5, nominated members, co-opted members, and ex- officio members. Ten members of the Committee are elected by electroniclpostal ballot. the result of which is announced at the Annual General Meetin8. Member5 elected to the Committee serve for a term of three years and then reti￿ from the Committee unle55 they are elected Chairman or Vice- Chairman. A retiring member is ineligible for re-election to membership of the Committee for a period of one year after they reti￿. 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 elect5 from amongst Its members a Chair to hold offbce for two years immediate following the Annual General Meeting. Such election is held at the last Committee meeting of the previous Chaiman'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 elects from amongst it5 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 previous 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 so decides. A co-opted member to the Committee will hold ofFice until the following Annual General Meeting. Any casual vacancy. whether in the offices of Chairman or vI￿- Chairman or amongst the elerted 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 Meeting. they will then retire. The casual vacancy will then be filled either by an electlon. 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 tasual vacancy will not be counted for purposes 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 Instilution will be eligible, except as Otherwise provided, for election or appointment or tO-OPtion to the Commlttee. Charity no 1017887 SaiiETY

British Tunnelling Society Annual Report and Accounts 2022 24 Objects ond policie5 and public benefit The 5ocietls objective is summarised a5 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. by fostering learning, understandin8, experience. interest, and research therein. In furtherance of this the Society.. Provide5 a forum for the discussion of the problems and techniques of tunnelling by holding monthlv meetings which are free and open to all interested parties in addition to Society members. Encourages tunnelling 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 tralning courses on a non-proflt-making basis to train young tunnellers in tunnelling best practice,. Supports a Young Members division that embraces the oblectfves of the Soclety but focuses towards graduates, school leavers, and students still at school- Support5 the development of skills through support to courses such as the Msc in Tunnelling and Underground Space at Warwick University; Supports the development of apprenticeships and QCF NVQ qualification5 via its work with the National Working Group, Tunnelskills and the Tunnelling and Underground Construction Academy ITUCAI: Produces and arranges for the publication of papers and reports to disseminate information on tunnelling and to provide points of reference: Co-operates with other a55ociations in holding meetings and conferences locally. nationally, and internationally- Is the national representative body to the General •lssembly of the International Tunnelling and Underground Space A5SOCiation IITAI for the UK,. Pays its annual membership fees to the ITA for the maintenance and on-going management of the Association; Maintains liaison with similar associations ènd individuals in other countries and co-operates 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 assistance and advice to H.M. Government, Statutory authorities, board5, institutions. and similar bodies and to make representations to such bodies,. and Does all such other things as are incidental or conducive to the attainment of any or a51 the above aims. Administrotion of the Society The business affairs of the Society are administered by a committee consisting of ten elected members, several co-opted and ex officio members together with a representatrve from the Institution of Civil Engineers, the British Geotechnical Associatlon, the International Tunnelling and Underground Space 550ciation, the Institute of Materials. Minerals and Mining and the Pipe Jacking Association. The 2022 AGM saw vacancies arise in the Committee, due to the retirement of elerted members. This year there were 3 elected member vacancie5 and 3 BTS member5 were appoinled to serve from the 2022 AGM for a period of three years. They were: Daniel Garbutt, John Greenhalgh and Divik Bandopadhyaya. Charity no 1017887 TLtywELuM6 5uciETY

Brltlsh Tunnelling Society Annual Report and Accounts 2022 In addition, the Comrnlttee requested that Eddie Woods, Donald Lamont. Shani Wallis, Ken Spiby. Roger Bridge. Patrick Reynold5 and John Scholey continue their roles as co-opted member5 of the Committee. which they agreed to do and welcomed Sarah Langley remaining on the Committee this time as a co- opted rather than elected member. Alasdair Fraser took on the responsibility of the Youn8 Members. Chair in 2021, followed by George Doulkas in 2022. The British Tunnelling Society is one of the largest and most active of the A￿OCiated Societies of the Institution of Civil Engineers. The Committee deals with its substantial workload by allocating It to sub-commlttees as detailed in their individual reports. Charity no 1017887 BIITIVH TLf•4ELUN UGIETY

British Tunnellin8 Society Annual Report and Accounts 2022 26 24. Report of the independent examiner I report to the trustees on my examination of the accounts of the British Tunnelling Society I'the association'l for the year ende(i 31 December 2022. Responsibilities and basis of report As the Trustees of the Association land also its direttors for the purpose5 Qf company lawl you are responsible for the preparation of the accounts in accordance with the requirements of the Charities Act 2011. I report in respect of my examination of the charlty's accounts carried out under 5ettion 145 of the CharitiesAct 2011 and in carrying out my examination I have followed the Directions given by the Charity Commission under section 14515llbl of the Charities Act 2011. Independent examiner's statement I have completed my examination. I confirm that no material matters have come to my attentlon In connection with the examination giving me cause to believe= accounting records were not kept in respect of the Association as required by section 130 of the Act- or 2. the accounts do not accord with those records- or 3. the accounts do not comply with the applicable requirements concerning the form and content of accounts set out in the Charities (Accounts and Reports) Regulation$ 2CK)8 other than any requirement that the accounts give a 'true and fair view which is not a matter considered as part of an independent examination. I have no concerns and have come across no other matters in connection with the examination to which attention should be drawn In this report in order to enable a proper understsnding of the accounts to be reached. Jonathan Healey FCA Lindeyer Francis Ferguson Limited Chartered Accountants North House 198 High Street, Tonbridge, Kent TN9 IBE Date BRITISH TLY*ELuNO 5o¢ikTY Charity no 1017887

British Tunnelling Society Annual Report and Accounts 2022 8RrrisHTUNNELLING SOCIETY STATEMENTOF FINANC14LACTIVITIES (INCLUDING INCOME AND EXPENDrruRE ACCOUNTI FOR THEYEAR ENDED31 DECEMBER Z02Z 2022 2022 Restricted fufid5 ZOZ2 Total nds Unr¢5tri¢ttd funds Total luTrds INCOME FROP41 DoThations'. DeugAllenby Charitableactivitles-. Subscriptions Income from othertr2dlngactivities.. BTS CPD Course5 ftoyalties & Soles BTSYM CDnterence Underground Health & Safety Course BTS Ceurse Annual Dinner spon￿r$hIp L8fKI L8LK) 110,932 110.932 110.122 24,80D 275 92 4.9)2 6,855 119,310 106,395 250 92 4.902 6.855 119.310 106.395 250 10,810 Inve5tment5'. Interest 601 601 Total Income 349,337 349.337 146.014 EXPENDifvRE ON Charitable aclivitie5 Postage Meetin8 Expenses and secretarial Subscriptionsto other bodies Olhercosts Publi£atlDns Website Award & Prizes fjrant &Jndry Expenses Prolesslonal fees 25 2L936 1.087 1,730 25 21.936 1.087 L730 15.170 1,155 1.296 138 1,205 9,000 138 1,20S 854 6,285 500 4,202 4L467 2,940 2,940 38.061 Empendiiure on ralslngfunds E¥pen5es recourse and dinner Publication5 Under8raund Health & Safety Course BTSYM Conference Young Member5Committee BTS CPD Courses BTS Conference Bad Debt 171.218 40.212 6.590 4.176 746 171.218 40,212 6,5 4,176 746 29 41,904 9,219 309 1.744 133 43.920 133 43,920 20,960 266,995 266,995 77,765 Tot•lxpendityre Netlnwrneand nel mo¥•n¢ntin funds 305,056 305,056 44,281 119,232 26,782 1,800 RECONCILiATION OF FUNDS Fund balancÈs broughtforward l January 2022 312,914 5.496 318.410 291,628 Fund balances carrSedl¢Jrward it311)e¢¢mbe 1022 357,195 7.296 364,491 318,410 The ttatementoffinanclal activity includesall ￿1n5 orbd losses in the perlod. All Income and expenditu￿ derives from contlnulng actlvltle& Charity no 1017887 T￿￿EL￿￿7 SllriETY

British Tunnelling Society Annual Report and Accounts 2022 28 BRITISH TUWIELUNG SOCIEri BALANCE SHEET ASAT 31 OECEPIIBER 2022 Notes 21122 CURRENf ASSErs Debtors Shortterm deposlts Cash ot bJTrk 120,821 62,585 397,49S 146.306 62,583 403.IX)I 580,9 611190 CURRENTLIABIUTIE5 Credltors.. Amounts falling due wtthin oneyear 216813 293.4 NET CURREIIT A55ET5 364.491 318,410 114COME FUNDS Unre5triLted Restricted 357,195 7,296 312,914 5,496 364.491 318,410 The ngte5 un page 29to 31 form part of these flnancial 5tatemerbts. ApprD¥ed bythe ajrnrnittee on nd $I￿tI on its behalf bv.. Aod Youn8- Chai Charity no 1017887 TLWELUND 5oeiETY

Brilish Tunnelling Society Annual Report and Accounts 2022 BRITISH TUNNELLING SOCIETY NOTES TO THE FINANCIAL STATEMENTS FOR THE YEAR ENDED 31 DECEMBER 2022 Accounting Policies Accounting Convention The financial statements have been prepared in accordance with the Financial Reporting Standard 102 effective January 20151 IFRS 1021 and the requirements of the Statement of Recommended Practice ISORPI applicable to charities preparing their accounts in accordante with the Financial Reporting Standard applicable in the UK and Republic of Ireland {FRS 1021 (effective l January 20151 (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 uncertaintie5 about the charity's ability to continue, and so the golng concem basi5 of accounting has been adopted. Income All subscriptions and investment Income 15 accounted for when received. except in the case of subscriptions which are specifically stated to be in respect of an ensuing accounting perlod. No C￿dit is taken for subscriptions unpaid at the balance sheet date. Expenditure Expenditure Is recognised when there is a legal or constructive obligation to transfer resources 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 basis. 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 objectives of the Society. Taxatlon The charity is exempt from corporation tax on its charitable activity. Charity no 1017887 BRIT13 5ociiTY

British Tunnelling Society Annual Report and Accounts 2022 30 $HTUNNEw￿ SOCIETY r4oTE$TO7HÉ FINANCIAL STATEMEpirs FOR711E VEAAENDED 31 DECEMOEA2012 M¢mb¢r's subsulptlon5 The geographical anaty51sof SUb￿riptIOnS Is asfolknw5' zou zozi united Kingdom Restof theworkl 91.23S 18,696 91.604 18518 LIO,932 110,122 Debtws 20 Oebtors Prepayments ICE lrntercompany 5,240 121.178 19.888 112P83 8,738 120121 146JL Cr•dMors PurthJSeL￿VrcOntr￿l Acrount Jb5LYlPtIOn5 In advanie Ac<rua 10.480 27313 5,If 7,1 166.3( 6tsl4 32J66 3.980 9IL8 240802 Other Cieditors Receipts in Ad*nce 216.413 293,480 withlnthe arnountforoiher (redltor5 BTS are hc4dinÈ£6.832on behaWof Think Deep UK Ernpkn¥m@Tht costs The souety does notemploy staff direcdy. Ll nEt J5JetstsetW4Een fur￿$ Re5twKted funds Unvestrkltdfwbds T•t•lFwids Fund bJlaDces at31 DKernbEr 2022 are representedbv.. eurrent a55e15 CUrr￿t liabilitie5 fallingdue withinoneyear 5rJs)8 1216,4131 7.296 580,9N 1216.4131 357,195 7,296 364,491 Charity no 1017887 BroiTIS rul￿EL￿N￿ SOCIETY

British Tunnelling Society Annual Report and Accounts 2022 ststement￿ffl¢y8rnefi¢ kn fvThd$ Unrestrpaed lunds l￿d% Tot•lFund5 ealancebrDuÉhtforward at Ljanuary 2022 312.9J4 5A96 318,4LO NEt rnovernent in funds 44.281 iioo 7,2% 46,081 364,491 Fund balances ￿rr￿ forward &131 De￿rnber 2022 357.1 vtrktéd Funds The DougAlleDbyAward wa5 Ethbli5hEd in 2020.thefunds are to be used ￿ award a r￿￿￿al to 8 youn8tunne1￿r¢9TsYMl annualtyin Oou¢5 Mernory. Comrrftiee Cornmittee Membeis do not and nÈr have ret¥ved any remuneratlon. 2011 Traveland sub51stell￿ expense5 reimbursedtotommtttse members In.b.3 tru5tee5 relrnbursed In Z021. 1 In 20211 766 1.507 766 Charity no 1017887 BAITI8 TUTrr4ELui•3 SociiTY