| Andrew James Nicholson | Director | 22 Aug 2011 | 31 May 2018 | British | 51 years |
| Andrew Richard Teale | Director | 22 Aug 1997 | 28 Feb 2001 | British | 63 years |
| Andrew Stephen Carnell | Director | 25 Sept 1991 | 4 Aug 1997 | British | 68 years |
| Angela Mary Cunningham | Secretary | 20 Feb 2004 | 23 Nov 2006 | British | - |
| Anthony Edward Peppard | Director | 26 May 2004 | 31 Dec 2004 | Irish | 67 years |
| Barbara Charlotte Wallace | Director | 8 Oct 2010 | 22 Aug 2011 | British | 54 years |
| Carolyn Jean Whittaker | Secretary | 23 Nov 2006 | 22 Aug 2011 | Other | - |
| Christine Anne Russell | Secretary | 22 Aug 2011 | 27 Jul 2012 | - | - |
| David Edmund Cartledge | Director | 17 Aug 2005 | 21 Sept 2010 | British | 79 years |
| Derek John Lewis | Director | 3 Mar 2005 | 28 Feb 2008 | British | 61 years |
| Derek John Lewis | Secretary | 22 Aug 2005 | 14 Jul 2006 | British | - |
| Garry Cuthbertson | Director | 21 Aug 1997 | 7 Aug 2000 | British | 69 years |
| Garry Cuthbertson | Secretary | 21 Aug 1997 | 7 Aug 2000 | British | - |
| Gary Robert Mcneilly Stewart | Director | 29 Feb 2008 | 8 Oct 2010 | British | 59 years |
| Ian Charles Franks | Secretary | 7 Aug 2000 | 19 Feb 2004 | British | - |
| James Anthony Jackson | Director | 8 Oct 2010 | 17 Apr 2012 | British | 58 years |
| Jocelyn Nadauld Brushfield | Director | 21 Sept 2010 | 18 Dec 2015 | British | 55 years |
| Mark Andrew Lambert | Director | 17 Aug 2005 | 13 Mar 2006 | British | 59 years |
| Mark Stanworth | Director | 26 May 2004 | 31 Mar 2005 | British | 61 years |
| Martyn Dennis Carnell | Director | 25 Sept 1991 | 1 Oct 1998 | British | 69 years |
| Neil Clark Macarthur | Director | 29 Feb 2008 | 8 Oct 2010 | British | 58 years |
| Paul James Carnell | Director | 25 Sept 1991 | 1 Oct 1998 | British | 71 years |
| Paul William Henry Dixon | Director | 21 Aug 1997 | 27 May 2004 | British | 82 years |
| Peter Martin Bowler | Director | 25 Sept 1991 | 31 Dec 1998 | British | 70 years |
| Raymond Reah | Director | 25 Sept 1991 | 22 Dec 1995 | British | 79 years |
| Raymond Reah | Secretary | 25 Sept 1991 | 5 Feb 1996 | British | - |
| Richard James Hopkins | Director | 3 Mar 2005 | 28 Feb 2008 | British | 67 years |
| Sally Jane Sutherland | Director | 17 Apr 2012 | 30 Sept 2019 | British | 58 years |
| Shankar Ramanathan | Director | 26 May 2004 | 23 Feb 2005 | British | 61 years |
| Simon Timothy Dixon | Director | 22 Aug 1997 | 27 May 2004 | British | 59 years |
| Stephen John Potter | Director | 4 Dec 1995 | 17 Jul 1997 | British | 67 years |
| Stephen John Potter | Secretary | 5 Feb 1996 | 21 Aug 1997 | British | - |
| Victor Frederick Shirley | Director | 24 May 1995 | 28 May 1997 | British | 82 years |