| Afshan Rathore | Secretary | 19 May 2017 | 12 Jul 2018 | - | - |
| Ana Louise Jordan | Secretary | 21 Jun 2022 | 12 Sept 2024 | - | - |
| Arthur David Cragg | Director | 18 Jan 2016 | 10 Jul 2020 | British | 63 years |
| Craig John Wood | Director | 13 Mar 2020 | 1 Dec 2022 | British | 55 years |
| David John Etherington | Director | 24 Feb 2016 | 4 Apr 2021 | British | 68 years |
| Deborah Lee Davis | Director | 1 Sept 2024 | 18 Mar 2025 | British | 62 years |
| Donald Mackechnie | Director | 8 Feb 2023 | 31 Aug 2024 | British | 52 years |
| Dudley Mark Hewitt Skinner | Director | 8 Feb 2023 | 31 Aug 2024 | British | 69 years |
| Jacqueline Leiper | Director | 1 Dec 2022 | 31 Aug 2024 | British | 53 years |
| Jacqueline Lowe | Director | 8 Feb 2023 | 30 Sept 2023 | British | 59 years |
| Joanna Kate Harris | Director | 1 Sept 2024 | 4 Jun 2025 | British | 52 years |
| Joanne Marie Gilroy French | Director | 18 Jan 2016 | 24 Feb 2016 | New Zealander | 55 years |
| Jonathan Anderson | Director | 31 Jan 2022 | 31 Aug 2024 | British | 70 years |
| Jonathan David Haslam | Director | 18 Jun 2018 | 20 Jul 2018 | British | 59 years |
| Jonathan Scott Wheway | Director | 1 Sept 2024 | 31 Oct 2025 | British | 59 years |
| Lucy Jane Benson | Director | 6 Mar 2017 | 31 Jan 2018 | British | 48 years |
| Nicola Megaw | Secretary | 8 Dec 2020 | 21 Jun 2022 | - | - |
| Paul Mcmahon | Director | 26 May 2022 | 31 Aug 2024 | British | 62 years |
| Peter Gordon John Docherty | Director | 13 Mar 2020 | 1 Dec 2022 | British | 44 years |
| Phillip Smith | Director | 24 Feb 2016 | 1 Sept 2021 | British | 57 years |
| Priscilla Ann Davies | Director | 22 Jun 2021 | 30 Jun 2023 | British | 54 years |
| Robert Kelly Adams | Director | 18 Jan 2016 | 24 Feb 2016 | English | 64 years |
| Robert Kelly Adams | Director | 6 Apr 2018 | 31 Dec 2019 | English | 64 years |
| Scott Cameron Guild | Director | 1 Dec 2022 | 31 Aug 2024 | British | 58 years |
| Simon Charles Smith | Director | 18 Jun 2018 | 28 Feb 2020 | British | 54 years |
| Sophie Jane O'connor | Director | 17 Jan 2023 | 30 Sept 2023 | British | 55 years |
| Thomas Gerard Kelly | Director | 18 Jan 2016 | 24 Feb 2016 | British | 54 years |
| Toby William Larkman | Director | 24 Feb 2020 | 31 May 2022 | British | 46 years |
| Vincent Philippe Francois Cambonie | Director | 24 Feb 2016 | 24 Feb 2020 | French | 60 years |
| Vincent Philippe Francois Cambonie | Secretary | 12 Jul 2018 | 24 Feb 2020 | - | - |