| Celia Rosalind Gough | Director | 16 Dec 2016 | 31 Oct 2025 | British | 51 years |
| Christophe Bellynck | Director | 16 Dec 2016 | 31 Jan 2020 | French | 65 years |
| Christopher James Langley | Director | 14 Oct 2010 | 18 Aug 2014 | British | 63 years |
| David Andrew Gerrard | Director | 16 Dec 2016 | 30 Jun 2021 | British | 62 years |
| Howard Brian James Stone | Director | 1 Aug 2015 | 16 Dec 2016 | British | 49 years |
| Keith Fraser Nord | Director | 6 Apr 2010 | 16 Dec 2016 | British | 67 years |
| Kevin Anthony Hurst | Director | 16 Dec 2016 | 30 Jun 2021 | British | 68 years |
| Michael John Dix | Director | 6 Apr 2010 | 16 Dec 2016 | British | 67 years |
| Michael Pelham Morris Olive | Director | 27 Sept 2007 | 16 Dec 2016 | British | 70 years |
| Nicholas Julian Ray | Director | 6 Apr 2010 | 5 Jun 2020 | British | 63 years |
| Peter Jonathan Lewin | Director | 27 Sept 2007 | 16 Dec 2016 | British | 74 years |
| Peter Jonathan Lewin | Secretary | 27 Sept 2007 | 16 Dec 2016 | British | - |
| Peter Leslie Mapstone | Director | 6 Apr 2010 | 1 Apr 2014 | British | 82 years |
| Richard John Greaves | Director | 12 May 2014 | 16 Dec 2016 | British | 55 years |
| Richard John Greaves | Director | 1 Dec 2014 | 31 Jul 2015 | British | 55 years |
| Richard Kirkman | Director | 16 Dec 2016 | 21 Jul 2020 | British | 56 years |
| Robert Paul Wilfred Whiting | Director | 27 Sept 2007 | 12 Jun 2009 | British | 60 years |
| Sean Russell Williams | Director | 6 Apr 2010 | 31 Mar 2015 | British | 62 years |
| Tracy Jayne Knipe | Director | 30 Jun 2021 | 3 Sept 2024 | British | 58 years |