| Alexander Duncan Graham Douglas | Director | 28 Jan 2015 | 28 Jun 2022 | British | 74 years |
| Andrew James Evans | Director | 13 Nov 2013 | 28 Jun 2022 | British | 72 years |
| Anthony Peter Sharpe | Director | 28 Jun 2022 | 9 May 2025 | British | 65 years |
| Colin George Eric Corbally | Director | 21 Dec 2018 | 28 Jun 2022 | British | 58 years |
| David Benjamin Freeder | Director | 28 Jan 2015 | 2 Nov 2018 | British | 45 years |
| David Benjamin Freeder | Director | 2 Nov 2018 | 14 Dec 2018 | British | 45 years |
| Duncan Stuart Blyth | Director | 28 Jan 2015 | 12 Dec 2018 | British | 58 years |
| Edward Barnaby Russell Simpson | Director | 22 Jan 2015 | 21 Dec 2018 | British | 53 years |
| Itai Raanan | Director | 1 Aug 2022 | 23 Apr 2025 | Israeli | 50 years |
| Mary Bethan Czulowski | Director | 28 Jun 2022 | 23 Sept 2025 | British | 68 years |
| Mehal Shah | Director | 2 Nov 2018 | 28 Jun 2022 | British | 37 years |
| Michael Fishwick | Director | 28 Jun 2022 | 31 Jan 2025 | British | 61 years |
| Ron Daniel Rappaport | Director | 28 Jun 2022 | 1 Aug 2022 | Israeli,french | 40 years |
| Thomas Charles Raynham | Director | 12 Dec 2018 | 28 Jun 2022 | British | 49 years |
