| Alastair Sholto Neil Murray | Director | 15 Jan 2014 | 30 Aug 2019 | British | 66 years |
| Alexander Richard Whitehouse | Director | 30 Aug 2019 | 5 Nov 2020 | British | 57 years |
| Bob Spooner | Director | 24 Apr 2014 | 29 Jan 2015 | British | 72 years |
| Claire Michelle Taylor | Secretary | 26 Oct 2023 | 30 Apr 2025 | - | - |
| Duncan Neil Leggett | Director | 10 Dec 2019 | 5 Nov 2020 | British | 47 years |
| Fernando Goni | Director | 28 Apr 2014 | 5 Nov 2020 | French | 53 years |
| Gavin John Darby | Director | 15 Jan 2014 | 31 Jan 2019 | British | 70 years |
| Helen Kathryn Selby | Secretary | 23 May 2014 | 1 Jan 2019 | British | - |
| John Paul Danner | Director | 27 Nov 2017 | 5 Nov 2020 | American | 61 years |
| Jonathan Howard Jenkins | Director | 31 Oct 2022 | 12 Sept 2025 | British | 61 years |
| Ketan Halai | Director | 5 Nov 2020 | 2 May 2023 | British | 47 years |
| Martyn Kevin Wilks | Director | 18 May 2015 | 13 May 2016 | British | 68 years |
| Nishpank Rameshbabu Kankiwala | Director | 19 May 2014 | 30 Sept 2022 | British | 69 years |
| Peter Andrew Hill | Secretary | 1 Jan 2019 | 7 Feb 2023 | - | - |
| Raymond Charles Alexandre Leclercq | Director | 28 Apr 2014 | 16 Jun 2014 | French | 58 years |
| Robbie Catharina Martin Jan Reynders | Director | 16 Jun 2014 | 27 Nov 2017 | Belgian | 52 years |
| Robert Charles Higginson | Director | 30 Sept 2022 | 31 Oct 2022 | British | 65 years |
