| Andrew Charles Butterworth | Director | 7 Jan 2008 | 4 Oct 2023 | British | 52 years |
| Andrew John Allan | Director | 6 Dec 2006 | 8 Feb 2012 | British | 58 years |
| Christopher Andrew Roberts | Director | 15 Jul 2009 | 4 Oct 2023 | British | 55 years |
| Christopher George Oglesby | Director | 6 Dec 2006 | 4 Oct 2023 | British | 59 years |
| Ciara Keeling | Director | 13 Dec 2018 | 4 Oct 2023 | British | 42 years |
| David Robert James Guest | Director | 11 Jan 2007 | 13 Aug 2008 | British | 54 years |
| Iain James Grant | Director | 11 Jan 2007 | 27 Sept 2013 | British | 67 years |
| John Roderick Marland | Director | 11 Jan 2007 | 13 Dec 2018 | British | 59 years |
| Kate Victoria Lawlor | Director | 4 Oct 2023 | 22 Dec 2023 | British | 45 years |
| Katharine Jane Vokes | Director | 6 Dec 2006 | 13 Dec 2018 | British | 57 years |
| Katharine Jane Vokes | Secretary | 6 Dec 2006 | 29 Nov 2017 | British | - |
| Katherine Harrison | Director | 12 Jan 2010 | 24 May 2012 | British | 57 years |
| Kevin James Crotty | Director | 11 Jan 2007 | 4 Oct 2023 | British | 50 years |
| Michael John Oglesby | Director | 11 Jan 2007 | 26 Jan 2016 | British | 87 years |
| Peter Andrew Crowther | Director | 11 Jan 2007 | 13 Dec 2018 | British | 54 years |
| Peter Andrew Crowther | Director | 4 Oct 2023 | 3 Nov 2023 | British | 54 years |
| Philip Andrew Kemp | Director | 31 Oct 2017 | 13 Dec 2018 | British | 62 years |
| Richard Peter Burgess | Director | 11 Jan 2007 | 13 Aug 2008 | British | 57 years |
| Richard Peter Burgess | Director | 9 Oct 2014 | 30 Sept 2020 | British | 57 years |
| Richard William Malin | Director | 11 Jan 2007 | 20 Jul 2013 | British | 78 years |
| Robert David Yates | Director | 6 Dec 2006 | 14 Feb 2014 | British | 64 years |
| Rowena May Burns | Director | 10 Apr 2008 | 13 Dec 2018 | British | 73 years |
| Sian Louise Land | Director | 7 Mar 2011 | 6 Oct 2011 | British | 59 years |
| Steven Michael Mckiernan | Director | 30 Sept 2020 | 14 Apr 2023 | British | 38 years |