John Holtby
Trustee
| Charity | Role | Appointed |
|---|---|---|
| Marmaduke Langdale Charity | Trustee | Jan. 8, 2014 |
| The Literary And Philosophical Society At Kingston Upon Hull | Trustee | July 1, 2025 |
| Wilson-Barkworth Fund | Trustee |
Trustee
| Charity | Role | Appointed |
|---|---|---|
| Marmaduke Langdale Charity | Trustee | Jan. 8, 2014 |
| The Literary And Philosophical Society At Kingston Upon Hull | Trustee | July 1, 2025 |
| Wilson-Barkworth Fund | Trustee |