| Alasdair David Evans | Director | 15 Apr 2008 | 20 Sept 2010 | British | 65 years |
| Alastair Ross Goobey | Director | 4 Jul 1997 | 2 Feb 2008 | British | 81 years |
| Andre Gibbs | Director | 1 Jul 2004 | 28 Nov 2012 | British | 56 years |
| Anita Joanne Sadler | Secretary | 7 Oct 2008 | 21 Feb 2017 | British | - |
| Anthony Jan Giddings | Director | 6 Jan 1998 | 28 Nov 2012 | British | 75 years |
| Aubyn James Sugden Prower | Director | 6 Jan 1998 | 28 Nov 2012 | British | 71 years |
| Aubyn James Sugden Prower | Secretary | 6 Jan 1998 | 28 Nov 2012 | British | - |
| Christopher Mark Taylor | Director | 31 Mar 2011 | 23 May 2025 | British | 67 years |
| David John Gratiaen Partridge | Director | 6 Jan 1998 | 28 Nov 2012 | British | 68 years |
| David Scudder | Secretary | 3 Dec 2019 | 12 Mar 2024 | - | - |
| Dominic Hugh Shorthouse | Director | 13 Jun 1992 | 18 Aug 1997 | British | 65 years |
| Emily Clare Bird | Director | 31 Dec 2024 | 22 May 2025 | British | 45 years |
| Gary John Taylor | Director | 1 Jan 2000 | 3 Nov 2011 | British | 60 years |
| George Augustine Barton Steer | Director | 13 Jun 1991 | 19 Aug 1997 | British | 86 years |
| James Anthony Boyd Joll | Director | 10 May 1994 | 26 Aug 1997 | British | 90 years |
| James Garwood Michael Wates | Director | 1 May 2015 | 1 May 2024 | English | 66 years |
| Jane Tambor | Director | 5 Jul 1993 | 13 Jul 1993 | British | 65 years |
| John Stephen Sadler | Director | 4 Jul 1997 | 1 May 2001 | British | 96 years |
| Jonathan Hugo Eccles Thompson | Director | 1 Jan 2013 | 1 May 2024 | British | 68 years |
| Louis Goodman Elson | Director | 23 Mar 1994 | 18 Aug 1997 | United States | 64 years |
| Mark Lees Young | Secretary | 21 Feb 2017 | 3 Dec 2019 | - | - |
| Michael Bernard Lightbound | Director | 17 Mar 2020 | 31 Dec 2024 | British | 51 years |
| Michael Gwinnell | Director | 13 Jun 1991 | 18 Aug 1997 | British/irish | 81 years |
| Michael Ian Freeman | Director | 13 Jun 1991 | 24 Feb 2020 | British | 75 years |
| Peter Frank Hazell | Director | 1 May 2001 | 31 Dec 2014 | British | 78 years |
| Peter Geoffrey Freeman | Director | 13 Jun 1991 | 24 Feb 2020 | British | 71 years |
| Peter Geoffrey Freeman | Secretary | 13 Jun 1991 | 23 Mar 1994 | British | - |
| Robert Alan Padgett | Director | 4 Aug 1997 | 7 May 2003 | British | 83 years |
| Robert Laurence | Director | 13 Jun 1991 | 18 May 1994 | British | 68 years |
| Robert Michael Evans | Director | 1 Jul 2004 | 28 Nov 2012 | British | 56 years |
| Robert Stopford Webb | Director | 1 Apr 2009 | 29 Feb 2012 | British | 78 years |
| Roger Nigel Madelin | Director | 13 Jun 1991 | 28 Nov 2012 | British | 67 years |
| Ronald Millar | Director | 5 Jul 1993 | 13 Jul 1993 | British | 64 years |
| Ronald Millar | Secretary | 23 Mar 1994 | 6 Jan 1998 | British | - |
| Rupert James Clarke | Director | 15 Nov 2005 | 15 Apr 2008 | British | 68 years |
| Stephen Tillman | Director | 1 Jan 2000 | 3 Nov 2011 | British | 61 years |
| Timothy William John Turnbull | Director | 20 Sept 2010 | 31 Mar 2011 | British | 56 years |
| Vijyanti Gorasia | Director | 31 Dec 2024 | 23 May 2025 | British | 39 years |