| Angus Crawford Macdonald | Director | 2 May 2013 | 20 Oct 2014 | British | 62 years |
| Chipo Beatrice Ruvimbo Murombedzi | Director | 10 Oct 2023 | 12 Dec 2024 | British | 40 years |
| Claire Lucy Burden | Director | 1 May 2014 | 26 Feb 2015 | British | 44 years |
| David Swindin | Director | 12 Feb 2016 | 2 Sept 2020 | British | 58 years |
| Frances Mary Button | Director | 30 Mar 2015 | 12 Feb 2016 | British | 55 years |
| Graham David Harding | Director | 9 Dec 2013 | 12 Feb 2016 | British | 60 years |
| Ian Jamie Mcintyre | Director | 1 Jun 2021 | 10 Oct 2023 | British | 42 years |
| James Michael Pinney | Director | 1 Aug 2022 | 1 Aug 2025 | British | 40 years |
| Matthew James Boss | Director | 2 Sept 2020 | 1 Aug 2022 | British | 52 years |
| Nils Jimmy Hansson | Director | 12 Feb 2016 | 15 Jun 2017 | Swedish | 56 years |
| Oliver George Alexander | Director | 12 Feb 2016 | 20 Apr 2017 | British | 52 years |
| Paul Reginald Brian Bowden | Director | 2 Sept 2020 | 27 Sept 2024 | British | 59 years |
| Rupert Sherman John Cotterell | Director | 26 Feb 2015 | 12 Feb 2016 | British | 57 years |
| Stephen Lewis Harmon Packwood | Director | 20 Apr 2017 | 2 Sept 2020 | British | 45 years |
| Valerio Scupola | Director | 15 Jun 2017 | 2 Sept 2020 | Italian | 41 years |
