| Adrian Daryl Robert Kamellard | Director | 28 May 2015 | 13 Jun 2017 | British | 68 years |
| Alistair Houghton | Secretary | 12 Aug 2021 | 4 Nov 2022 | - | - |
| Anju Patwardhan | Director | 17 Dec 2020 | 17 Dec 2021 | Singaporean | 60 years |
| Benoit Marrel | Director | 13 Jun 2017 | 27 Nov 2020 | French | 46 years |
| Cuong Do | Director | 27 Nov 2020 | 17 Dec 2021 | American | 60 years |
| Daniel Thomas Bradley | Director | 13 Jun 2017 | 17 Dec 2021 | British | 51 years |
| Michael Francis Dempsey Burns | Director | 2 Jul 2019 | 17 Dec 2021 | American | 54 years |
| Nathalie Marie Oestmann | Director | 16 Dec 2021 | 10 Mar 2022 | American | 55 years |
| Nicholas Luc Smalle | Director | 20 May 2015 | 2 Jul 2019 | Belgian | 43 years |
| Paul Harrald | Director | 17 Jan 2023 | 29 Apr 2024 | British | 61 years |
| Robert Edmund Courtneidge | Director | 26 May 2015 | 13 Jun 2017 | British | 62 years |
| Roberto Aitkenhead | Director | 27 Nov 2020 | 17 Dec 2021 | American | 44 years |
| Scott Weller | Director | 16 Dec 2021 | 13 Jan 2023 | American | 46 years |
| Stefan Josef Klestil | Director | 30 Jun 2015 | 2 Jul 2019 | Austrian | 59 years |
| William Andrew Earner | Director | 13 Jun 2017 | 27 Nov 2020 | British | 52 years |