| Alison Rosamund Hirst | Director | 9 Sept 1999 | 29 Nov 2007 | British | 75 years |
| Andrew Christopher Rees | Director | 14 Mar 2022 | 28 Mar 2024 | British | 48 years |
| Andrew Jonathan Charles Newman | Director | 19 Nov 2008 | 30 Sept 2009 | British | 56 years |
| Andrew Robert Linton Howe | Director | 30 Aug 2007 | 31 Aug 2011 | British | 64 years |
| David Benjamin Byard | Director | 25 Jun 2021 | 25 Apr 2023 | British | 51 years |
| David Bill | Secretary | 30 Aug 2007 | 20 Sept 2013 | British | - |
| David Glyn Richards | Director | 26 Jun 2006 | 23 Aug 2007 | British | 70 years |
| David Homfray Slater | Director | 26 Jun 2006 | 16 Jul 2009 | British | 86 years |
| David Robertson Hirst | Director | 9 Sept 1999 | 31 Oct 2008 | British | 79 years |
| David Robertson Hirst | Secretary | 9 Sept 1999 | 30 Aug 2007 | British | - |
| David Stevenson | Director | 25 Jan 2012 | 21 Sept 2016 | British | 59 years |
| Ged Holmes | Director | 21 Sept 2016 | 23 Jan 2017 | British | 64 years |
| Howard Thomas | Nominee Secretary | 9 Sept 1999 | 9 Sept 1999 | British | - |
| Jonathan Easton Blakesley Fish | Director | 2 Jun 2011 | 30 Aug 2012 | British | 55 years |
| Mark Andrew King | Director | 29 Jun 2016 | 23 Jan 2017 | British | 61 years |
| Paul Lazarevic | Director | 19 Nov 2008 | 31 Mar 2012 | British | 62 years |
| Peter Robert Hughes | Director | 1 Oct 2007 | 24 Jan 2012 | British | 78 years |
| Richard George Andrew Haddon | Director | 16 Jan 2017 | 25 Jun 2021 | British | 70 years |
| Richard Ian Jones | Director | 25 Jun 2021 | 11 Oct 2023 | British | 46 years |
| Simon Matthew Dudgeon Oliver | Director | 11 May 2011 | 2 Jun 2011 | British | 86 years |
| Stephen Henry Ralph Brooke | Director | 29 Sept 2009 | 25 Jun 2021 | British | 53 years |
| Stephen William Mahon | Director | 26 Jun 2006 | 30 Aug 2012 | British | 58 years |
| Thomas Saul | Secretary | 25 May 2016 | 25 Jun 2021 | - | - |
| Tristan Gordon Alexander Fischer | Director | 1 Feb 2008 | 30 Apr 2010 | British | 51 years |
| William Andrew Joseph Tester | Nominee Director | 9 Sept 1999 | 9 Sept 1999 | British | 64 years |