| Alistair Anthony Breare | Director | 9 Sept 2011 | 6 Mar 2020 | British | 63 years |
| Andrew Robert Craig Ross | Director | 5 Apr 2017 | 20 Apr 2018 | British | 62 years |
| David Stephen Ellis | Director | 24 Feb 2014 | 5 Apr 2017 | British | 64 years |
| Graham John Bird | Director | 21 Dec 2016 | 5 Apr 2017 | British | 57 years |
| James Lucien Alexander Szpiro | Director | 10 Dec 2014 | 21 Dec 2016 | British | 53 years |
| Jarrod Mason Potter | Director | 1 May 2019 | 31 Jul 2024 | British | 56 years |
| Julian Gerard Powell Phipps | Director | 5 Apr 2017 | 16 Jul 2018 | British | 60 years |
| Julian Gerard Powell Phipps | Secretary | 27 Feb 2018 | 16 Jul 2018 | - | - |
| Kevin Fry | Secretary | 24 Feb 2014 | 27 Feb 2018 | British | - |
| Martin Joseph Yalden | Director | 28 Aug 2019 | 11 Jul 2023 | British | 44 years |
| Peter Hugh Howells | Director | 9 Sept 2011 | 27 Jan 2014 | British | 73 years |
| Peter Hugh Howells | Secretary | 22 Sept 2011 | 24 Jul 2014 | - | - |
| Peter Maclean | Director | 22 Sept 2011 | 5 Apr 2017 | British | 78 years |
| Pieter Johannes Hooft | Director | 18 Jul 2011 | 5 Apr 2017 | Dutch | 63 years |
| Richard William Brown | Director | 9 Sept 2011 | 22 Sept 2011 | British | 58 years |
| Sarah Elizabeth Coiley | Director | 10 Dec 2014 | 16 Aug 2019 | British | 53 years |
| Simon John Keeble | Director | 9 Sept 2011 | 22 Sept 2011 | British | 68 years |
| Steven Zhang | Director | 1 May 2019 | 16 Jun 2025 | British | 44 years |
| William Dobbie | Director | 20 Apr 2018 | 12 Oct 2018 | British | 67 years |