| Annika Aman Goodwille | Secretary | 4 Jun 2004 | 23 Mar 2009 | Swedish | - |
| Beatrice Louise Marie Luce Keighley | Director | 1 Feb 2011 | 4 Dec 2015 | French | 73 years |
| Daniel Marc Richard Jaffe | Director | 31 Aug 2018 | 24 May 2022 | British | 51 years |
| Darren Peter Gallant | Director | 14 Apr 2023 | 25 Apr 2024 | Canadian | 58 years |
| Garry Robin Southern | Director | 14 May 2004 | 1 Feb 2011 | British | 82 years |
| Madoline Louise Berry | Director | 1 Feb 2011 | 4 Dec 2015 | British | 72 years |
| Neil David Townson | Director | 4 Dec 2015 | 31 Aug 2018 | British | 66 years |
| Nima Abrishamchain | Director | 24 May 2022 | 14 Apr 2023 | British | 44 years |
| Oliver Robert Julian Parr | Director | 14 May 2004 | 11 Aug 2021 | British | 74 years |
