| Alan Conway Macpherson | Director | 9 May 2018 | 27 May 2021 | British | 56 years |
| Ana Cristina Sanches Noronha | Director | 26 May 2021 | 4 Sept 2023 | Brazilian | 50 years |
| Anthony Martin O'neill | Director | 27 Mar 2019 | 29 Nov 2022 | Australian | 69 years |
| Chandrika Kumari Kher | Director | 27 Sept 2022 | 18 Aug 2023 | British | 50 years |
| Claire Murphy | Director | 12 Nov 2021 | 8 Jan 2024 | Irish | 37 years |
| Craig Darren Fish | Director | 16 Sept 2021 | 4 Sept 2023 | South African | 47 years |
| Craig Wilson Miller | Director | 9 May 2018 | 29 Mar 2019 | British | 53 years |
| Elaine Christina Klonarides | Director | 9 May 2018 | 12 Nov 2021 | British | 50 years |
| Kurt James Burrows | Director | 1 Aug 2023 | 10 Jun 2025 | Australian | 46 years |
| Matthew Thomas Samuel Walker | Director | 12 Mar 2019 | 1 Sept 2021 | British | 45 years |
| Pasquale Ficara | Director | 15 Feb 2024 | 30 May 2025 | Canadian | 56 years |
| Taryn Doreen Sessel | Director | 27 Mar 2019 | 31 Jul 2020 | British | 48 years |
| Vivienne Laura Meredith | Director | 31 Jul 2020 | 4 Jul 2022 | British | 58 years |
| Zahira Quattrocchi | Director | 2 Sept 2019 | 4 Sept 2023 | Italian | 52 years |