| Andrew George Tansley | Director | 27 Feb 2023 | 27 Feb 2023 | British | 42 years |
| Andrew Grant | Director | 11 Jul 2017 | 27 May 2022 | British | 41 years |
| Andrew John Merricks | Director | 7 Dec 2015 | 11 Jul 2016 | British | 64 years |
| Christopher Furlong | Director | 27 Feb 2023 | 27 Feb 2023 | British | 61 years |
| Christopher Furlong | Director | 28 Feb 2023 | 5 Sept 2024 | British | 61 years |
| Clive Whitaker | Director | 30 Aug 2014 | 15 Oct 2018 | British | 73 years |
| Daniel Christopher Vanstone | Director | 22 May 2023 | 14 Nov 2024 | British | 45 years |
| Dean Thorvald Wetteland | Director | 10 Apr 2017 | 5 Feb 2020 | British | 50 years |
| Gary Lee Atkins | Director | 15 Oct 2018 | 24 Mar 2023 | British | 58 years |
| Graham Victor Hollingdale | Director | 21 Jan 2015 | 7 Dec 2015 | British | 69 years |
| Graham Victor Hollingdale | Director | 11 Jul 2016 | 17 Oct 2022 | British | 69 years |
| Hilary Louise Jones | Secretary | 30 Aug 2014 | 7 Jan 2019 | - | - |
| Jane Elizabeth Beck | Director | 19 Sept 2017 | 4 Apr 2024 | British | 58 years |
| Martin Christopher Hopkins | Director | 3 Nov 2016 | 25 Jan 2017 | British | 62 years |
| Nicholas Paul Maddox | Director | 5 Feb 2020 | 27 Feb 2023 | British | 60 years |
| Nicholas Paul Maddox | Director | 27 Feb 2023 | 2 Mar 2023 | British | 60 years |
| Nicola Turner | Director | 29 Sept 2023 | 24 Apr 2025 | British | 52 years |
| Penelope Jane Carpenter | Director | 25 Aug 2015 | 11 Jul 2017 | British | 72 years |
| Penelope Sandra Linden | Director | 15 Dec 2014 | 25 Aug 2015 | English | 83 years |
| Peter Michael Hawes | Director | 30 Aug 2014 | 3 Nov 2016 | British | 76 years |
| Robert Charles Read | Director | 15 Dec 2014 | 19 Sept 2017 | British | 61 years |
