| Daniel Marinus Maria Vermeer | Director | 18 Apr 2018 | 14 Nov 2022 | Dutch | 45 years |
| David Adams | Secretary | 11 May 2017 | 22 Mar 2018 | - | - |
| David Swift | Director | 20 Jul 2022 | 13 Oct 2023 | British | 51 years |
| Elodie Nadine Ordines | Director | 20 Jun 2018 | 1 Oct 2020 | French | 41 years |
| Glenn Sinclair Pearce | Director | 7 Dec 2023 | 1 Oct 2024 | British | 54 years |
| Grahame Christopher Sheeran | Director | 13 Oct 2023 | 14 Feb 2025 | British | 49 years |
| Janice Boucher | Director | 28 May 2021 | 28 Apr 2023 | British | 64 years |
| Joanne Stonehouse Fyfe | Director | 1 Oct 2024 | 25 Apr 2025 | British | 60 years |
| Kirti Ratilal Shah | Secretary | 22 Mar 2018 | 15 Jul 2022 | - | - |
| Mark Gwynfor George Davies | Director | 11 May 2017 | 1 Jul 2019 | British | 57 years |
| Mark Jonathan Fowkes | Director | 11 May 2017 | 7 Dec 2023 | British | 56 years |
| Martin John Smith | Director | 19 Dec 2018 | 30 Mar 2022 | British | 64 years |
| Matthew Thomas Rickards | Director | 11 May 2017 | 20 Apr 2021 | British | 40 years |
| Nicolas Alexandre Pierre Guerin | Director | 26 Oct 2015 | 19 Dec 2018 | French | 60 years |
| Nicolas Vincent Christian Swiderski | Director | 26 Oct 2015 | 20 Jul 2017 | French | 45 years |
| Peter John Sheldrake | Director | 11 May 2017 | 18 Apr 2018 | British | 67 years |
| Philip Duggleby | Director | 1 Jul 2019 | 20 Jul 2022 | British | 51 years |
| Samantha Tracy Veal | Director | 20 Jul 2017 | 22 Jun 2018 | British | 59 years |
