| Alan Michael Millwood | Director | 8 Aug 1992 | 13 May 1999 | British | 97 years |
| Anthony Evelyn Hepper | Director | 8 Aug 1992 | 31 Dec 1993 | British | 103 years |
| Benjamin Warwick Whitworth | Secretary | 27 Jul 2004 | 11 Apr 2008 | British | - |
| Brendan Wynne Derek Connolly | Director | 29 Mar 2012 | 29 Jun 2012 | British | 70 years |
| Charles Herbert Parker | Director | 8 Aug 1992 | 18 Jul 1996 | British | 73 years |
| Christopher Bruce Dowling | Director | 18 Jul 1996 | 31 Oct 2001 | Australian | 73 years |
| Christopher Francis Judd | Secretary | 23 May 2012 | 1 Oct 2013 | - | - |
| David Arthur Robins | Director | 1 Sept 2006 | 2 Mar 2011 | British | 74 years |
| David Mcmanus | Director | 3 Nov 2004 | 17 Jun 2011 | British | 73 years |
| Francis Keith John Jackson | Director | 8 Aug 1992 | 18 Jul 1996 | British | 77 years |
| Ian David Maclellan | Director | 10 Jul 1997 | 11 Oct 2002 | British | 78 years |
| Ian Richard Widdowson | Director | 31 Dec 1998 | 24 Jun 2003 | British | 73 years |
| Jeffrey William Herbert | Director | 8 Aug 1992 | 18 Jul 1996 | British | 84 years |
| Jeremy Philip Gorman | Secretary | 7 Nov 2008 | 23 May 2012 | British | - |
| Jeremy Rhodes | Secretary | 19 Mar 2008 | 6 Oct 2008 | British | - |
| John Arthur Pool | Director | 3 Nov 1997 | 18 Aug 2006 | British | 88 years |
| Jonathan Mark Oatley | Director | 5 Jul 2012 | 6 Jan 2017 | British | 58 years |
| Martin Keith May | Director | 11 Oct 2002 | 29 Mar 2012 | British | 73 years |
| Michael Connick | Director | 6 Jan 2017 | 13 Mar 2017 | British | 69 years |
| Michael George Pitt-payne | Secretary | 8 Aug 1992 | 13 May 1999 | British | - |
| Michael James Speakman | Director | 19 Dec 2012 | 6 Jan 2017 | British | 62 years |
| Michael John Farebrother | Director | 8 Aug 1992 | 18 Jul 1996 | British | 85 years |
| Michael Ralph Merton | Director | 10 Jan 2011 | 17 Jun 2011 | British | 75 years |
| Michael Robert Finch Langdon | Director | 18 Jul 1996 | 31 Oct 2001 | British | 78 years |
| Michael Thomas Reynolds | Director | 24 Jun 2003 | 31 May 2008 | British | 68 years |
| Michael Thomas Reynolds | Secretary | 30 Apr 2003 | 27 Jul 2004 | British | - |
| Nigel Edward Robson | Director | 8 Aug 1992 | 18 Jul 1996 | British | 81 years |
| Paul Ian Cartwright | Director | 18 Jul 1996 | 31 Oct 2001 | British | 65 years |
| Paul Raymond Ainley | Director | 14 Sept 1999 | 25 May 2006 | British | 81 years |
| Paul Sellars | Director | 31 Oct 2001 | 26 Nov 2002 | British | 72 years |
| Peter Jan Patrik Valentin Gyllenhammar | Director | 11 Oct 2002 | 26 Nov 2002 | Swedish | 73 years |
| Peter Jan Patrik Valentin Gyllenhammer | Director | 19 Sept 2002 | 11 Oct 2002 | Swedish | 73 years |
| Peter Morton | Director | 14 Sept 1999 | 8 Sept 2000 | British | 76 years |
| Rachel Nancye Amey | Director | 20 Jun 2011 | 24 Jun 2011 | British | 48 years |
| Rachel Nancye Amey | Director | 14 Nov 2012 | 3 Jan 2013 | British | 48 years |
| Richard Friend Allan | Secretary | 1 Oct 2013 | 7 Apr 2016 | - | - |
| Richard Friend Allan | Director | 1 Feb 2017 | 29 Mar 2018 | British | 62 years |
| Richard Keith Bingham | Director | 31 Jan 2008 | 14 Nov 2012 | British | 64 years |
| Richard Keith Bingham | Secretary | 6 Oct 2008 | 7 Nov 2008 | British | - |
| Sean Stuart O'connor | Director | 18 Jul 1996 | 14 Oct 2004 | British | 78 years |
| Sean Stuart O'connor | Director | 1 Apr 2007 | 30 Apr 2011 | British | 78 years |
| Stephen Harry Smith | Secretary | 13 May 1999 | 30 Apr 2003 | British | - |
| Timothy John Crommelin Eggar | Director | 1 May 2011 | 17 Jun 2011 | British | 75 years |
| Victoria Anne George | Director | 20 Jun 2011 | 24 Jun 2011 | British | 49 years |
| William Joh Michael Grylls | Director | 8 Aug 1992 | 3 Nov 1997 | British | 92 years |