| Alexander John Hynes | Director | 2 Feb 2012 | 19 Jul 2013 | British | 49 years |
| Alistair John Francis Gordon | Director | 14 May 2014 | 13 Apr 2022 | British | 58 years |
| Arnaud Jean-charles Régis Philippe Van Troeyen | Director | 2 Feb 2012 | 14 May 2014 | French | 57 years |
| Bernard Denis Maurice Tabary | Director | 11 Jun 2015 | 1 Jul 2022 | French | 66 years |
| Bruno Auger | Director | 2 Feb 2012 | 11 Jun 2015 | French | 62 years |
| Carolyn Ferguson | Secretary | 2 Feb 2012 | 22 May 2023 | - | - |
| Charles Anthony Hodgson | Director | 20 Jul 2013 | 20 Nov 2020 | British | 47 years |
| Charles Stuart Horton | Director | 9 Jun 2014 | 6 Jul 2018 | British | 62 years |
| Christian Schreyer | Director | 5 Nov 2021 | 31 Oct 2023 | German | 58 years |
| David Allen Brown | Director | 2 Feb 2012 | 5 Nov 2021 | British | 66 years |
| Dominic Joseph Lavelle | Director | 1 Apr 2022 | 31 Aug 2024 | British | 63 years |
| Dyan Crowther | Director | 14 Jul 2014 | 3 Dec 2016 | British | 63 years |
| Elodie Marie Francoise Brian | Director | 5 Jun 2019 | 27 Sept 2021 | French | 47 years |
| Gordon Alexander Boyd | Director | 28 Sept 2021 | 28 Mar 2022 | British | 66 years |
| Ian Mclaren | Director | 11 Dec 2017 | 23 May 2022 | British | 58 years |
| Ian Russell Grose | Director | 1 Nov 2023 | 6 Sept 2024 | British | 49 years |
| Jonathan Kevin Willcock | Director | 2 Feb 2012 | 26 Jul 2013 | British | 50 years |
| Keith Down | Director | 2 Feb 2012 | 6 Dec 2015 | British | 61 years |
| Martin Richard Dean | Director | 20 Nov 2020 | 1 Apr 2022 | British | 63 years |
| Miguel Angel Parras | Director | 9 Sept 2024 | 13 Jan 2025 | Spanish | 47 years |
| Nicholas James Forster Brown | Director | 7 Nov 2016 | 3 Sept 2018 | British | 67 years |
| Ralph Leo Pidsley | Director | 30 Jan 2024 | 30 Aug 2024 | British | 63 years |
| Sarah Elizabeth Mussenden | Director | 9 May 2022 | 31 Dec 2022 | British | 61 years |
| Sharon Emma Flood | Director | 7 Oct 2024 | 30 Sept 2025 | British,irish | 61 years |
| Simon Patrick Butcher | Director | 14 Mar 2016 | 30 Nov 2018 | British | 59 years |
| Stephen Edwin White | Director | 3 Sept 2018 | 8 Oct 2021 | British | 61 years |
| Virginie Merle | Director | 1 Jul 2022 | 30 Aug 2024 | French | 46 years |
| Wilma Mary Allan | Director | 9 Jun 2014 | 8 Dec 2017 | British | 64 years |
