| Clifford William Broadhurst | Director | 1 Jan 2020 | 31 Dec 2023 | British | 66 years |
| David George Keeling | Director | 29 Nov 2012 | 23 May 2014 | British | 71 years |
| Geoffrey Frederick Potton | Director | 29 Nov 2012 | 30 Sept 2016 | British | 73 years |
| Ian Simon Ailles | Director | 1 Nov 2016 | 19 Sept 2019 | British | 60 years |
| Kevin Ronald Bolt | Director | 11 Jun 2014 | 30 Apr 2023 | British | 68 years |
| Paul Henry High | Director | 21 Feb 2017 | 19 Sept 2019 | British | 66 years |
| Paul Lawrence Gray | Secretary | 29 Nov 2012 | 29 Jul 2015 | - | - |
| Paul Lawrence Gray | Director | 29 Nov 2012 | 22 Mar 2019 | British | 64 years |
| Philippa Spratley | Secretary | 29 Jul 2015 | 24 Mar 2025 | - | - |
| Sarah Jane Firman Ireland | Director | 1 Jun 2015 | 15 Jun 2017 | British | 61 years |
| Steven Charles Davis | Director | 1 Apr 2014 | 28 May 2015 | British | 65 years |