| Carole Elizabeth Brown | Director | 1 Sept 2010 | 15 Feb 2012 | British | 55 years |
| Colin Edward Lewis | Director | 1 Jun 2010 | 30 Apr 2021 | Welsh | 70 years |
| David Gaffney | Director | 17 Apr 2005 | 15 Jul 2010 | British | 59 years |
| David Martin Foster | Director | 5 Feb 1994 | 17 Apr 2005 | British | 70 years |
| Devendra Gandhi | Director | 17 Apr 2005 | 9 Mar 2009 | British | 67 years |
| Devendra Gandhi | Secretary | 17 Apr 2005 | 9 Mar 2009 | British | - |
| Dominic Joseph Lavelle | Director | 29 Jun 2009 | 17 Dec 2009 | British | 63 years |
| Elizabeth Margaret Catchpole | Director | 20 Jun 2012 | 15 Nov 2013 | British | 61 years |
| Geoffrey Robin Hirshman | Director | 3 Nov 1992 | 9 Jun 1997 | British | 86 years |
| George Cronin | Director | 1 May 2013 | 31 Aug 2014 | British | 75 years |
| Giles Henry Sharp | Director | 23 Jan 2015 | 3 Jun 2022 | British | 56 years |
| Gregory Charles Ketteridge | Director | 1 Mar 2011 | 30 Apr 2013 | British | 68 years |
| Jean Susan Atkins | Director | 6 Apr 2000 | 1 Aug 2006 | British | 78 years |
| Jennifer Mary Wicks | Secretary | 11 May 1992 | 18 Sept 1992 | British | - |
| Joanne Elizabeth Massey | Secretary | 17 Dec 2009 | 30 Nov 2021 | - | - |
| John Leslie Facer | Secretary | 18 Sept 1992 | 27 Mar 1997 | British | - |
| John Vivian Dipre | Director | 1 Apr 2006 | 9 Mar 2009 | British | 66 years |
| Jon William Mortimore | Director | 14 Oct 2013 | 31 Mar 2015 | British | 59 years |
| Keith Rodney Brown | Director | 11 May 1992 | 31 Dec 1994 | British | 89 years |
| Malcolm Dennis Geoffrey Folbigg | Director | 1 Jan 1998 | 27 Mar 2000 | British | 75 years |
| Mark Anthony Cook | Director | 20 Feb 2025 | 2 Oct 2025 | British | 64 years |
| Martyn Seth | Director | 28 Mar 2002 | 30 Apr 2003 | British | 71 years |
| Neil Fitzsimmons | Director | 1 Jun 2010 | 12 Dec 2014 | British | 67 years |
| Nishith Malde | Director | 2 Nov 1998 | 17 Apr 2005 | British | 68 years |
| Nishith Malde | Secretary | 2 Nov 1998 | 17 Apr 2005 | British | - |
| Norman Benn | Director | 6 Apr 2000 | 30 Jun 2006 | British | 63 years |
| Paul Alexander Kearton | Director | 7 Jun 2004 | 31 Aug 2005 | British | 71 years |
| Paul Richard Brett | Director | 17 Nov 2003 | 15 Jun 2005 | British | 50 years |
| Peter Raymond Yull | Director | 11 May 1992 | 21 Aug 1998 | British | 79 years |
| Remo Dipre | Director | 17 Apr 2005 | 9 Mar 2009 | British | 92 years |
| Richard Terence Beaumont | Director | 1 Jan 1998 | 16 Dec 1998 | British | 62 years |
| Robin Simon Johnson | Secretary | 24 Mar 2009 | 17 Dec 2009 | British | - |
| Stephen Daniel Meller | Secretary | 25 Mar 1997 | 2 Nov 1998 | British | - |
| Stephen Desmond Wicks | Director | 11 May 1992 | 17 Apr 2005 | British | 75 years |
| Victoria Christine Noon | Director | 5 Jan 2004 | 31 Dec 2008 | British | 61 years |