| Adrian Michael De Souza | Secretary | 10 Dec 2018 | 9 Jul 2019 | - | - |
| Angela Anna Cross | Director | 19 Aug 2015 | 1 Apr 2019 | British | 56 years |
| Ashok Valiram Vaswani | Director | 3 Apr 2017 | 1 Apr 2019 | Singaporean | 66 years |
| Carsten Rasch Egeriis | Director | 19 Aug 2015 | 3 Apr 2017 | Danish | 50 years |
| Charlotte Amy India Page | Secretary | 9 Nov 2018 | 10 Dec 2018 | - | - |
| Charlotte Amy India Page | Secretary | 9 Jul 2019 | 11 Sept 2019 | - | - |
| Christopher James Mack | Director | 3 Feb 2020 | 27 Jun 2023 | British | 55 years |
| Claire Anne Davies | Secretary | 14 Jun 2017 | 18 Aug 2017 | - | - |
| Clare Frances Barrett | Secretary | 13 Jan 2017 | 14 Jun 2017 | - | - |
| Crawford Scott Gillies | Director | 1 Jan 2021 | 31 May 2023 | British | 70 years |
| David John Thorburn | Director | 31 May 2018 | 3 Feb 2022 | British | 68 years |
| Ian Michael Cheshire | Director | 3 Apr 2017 | 31 Dec 2020 | British | 67 years |
| Julian Richard Davies | Director | 19 Aug 2015 | 3 Apr 2017 | British | 55 years |
| Kathryn Ann Matthews | Director | 19 Feb 2018 | 31 Dec 2022 | British | 67 years |
| Lawrence Charles Dickinson | Secretary | 18 Aug 2017 | 21 Dec 2017 | - | - |
| Matthew Hammerstein | Director | 5 Jul 2019 | 20 Feb 2024 | American | 54 years |
| Nicholas James Folland | Secretary | 8 Jan 2018 | 9 Nov 2018 | - | - |
| Patrick Anthony Gonsalves | Secretary | 19 Aug 2015 | 13 Jan 2017 | - | - |
| Rupert James Fowden | Director | 26 Jun 2019 | 2 Feb 2020 | British | 62 years |
| Rupert James Fowden | Director | 28 Jun 2023 | 1 Oct 2023 | British | 62 years |
| Steven James Penketh | Director | 19 Aug 2015 | 3 Apr 2017 | British | 56 years |
| William John Anthony Timpson | Director | 1 Jan 2018 | 8 Jul 2021 | British | 83 years |
