| Achal Prakash Bhuwania | Director | 1 Feb 2019 | 5 Aug 2020 | British | 47 years |
| Andrew Nicholas Whalley | Director | 26 Feb 2014 | 30 Jun 2014 | British | 62 years |
| Charles Desmond Kyle Reid | Director | 30 Jun 2014 | 27 Apr 2018 | British | 45 years |
| David Edward Crockford | Director | 26 Feb 2014 | 30 Jun 2014 | British | 54 years |
| Florian Tobias Kron | Director | 9 Dec 2024 | 26 Aug 2025 | German | 37 years |
| Jemma Louise Sherman | Director | 22 Mar 2022 | 12 Dec 2024 | British | 40 years |
| Jonathan Charles Smith | Director | 1 Feb 2019 | 27 Sept 2019 | British | 46 years |
| Joseph Charles Bayston Jones | Director | 5 Aug 2020 | 22 Mar 2022 | British | 32 years |
| Matthew Richard Partridge | Director | 26 Feb 2014 | 30 Jun 2014 | British | 55 years |
| Neil Tracey Harris | Director | 26 Feb 2014 | 30 Jun 2014 | British | 73 years |
| Peter George Raftery | Director | 30 Jun 2014 | 1 Feb 2019 | British | 58 years |
| Roger Siegfried Alexander Kraemer | Director | 2 Apr 2019 | 22 Mar 2022 | German | 58 years |
| Simon Thomas Wannop | Director | 26 Feb 2014 | 30 Jun 2014 | British | 47 years |
| Stephane Christophe Tetot | Director | 27 Apr 2018 | 1 Feb 2019 | French | 45 years |
| Stephen Booth | Director | 26 Feb 2014 | 30 Jun 2014 | British | 67 years |