| Alasdair David Evans | Director | 28 Sept 2007 | 20 Sept 2010 | British | 65 years |
| Alastair Ross Goobey | Director | 25 Jan 1993 | 31 Dec 2001 | British | 81 years |
| Andrew Richard Threadgold | Director | 16 Oct 1992 | 31 Jan 1993 | British | 82 years |
| Andrew William Longden | Director | 14 Apr 1998 | 24 Oct 2003 | British | 69 years |
| Anthony Watson | Director | 1 Jan 2002 | 31 Jan 2006 | British | 81 years |
| Charles Guy Rodney Leach | Director | 1 Apr 1994 | 11 May 1995 | British | 92 years |
| Christopher Mark Taylor | Director | 19 Dec 2012 | 9 Jun 2025 | British | 67 years |
| Craig Spencer White | Director | 31 Aug 2010 | 4 Mar 2020 | British | 62 years |
| David Leonard Grose | Director | 8 Jul 2016 | 19 Mar 2018 | British | 50 years |
| David Wyndham Davies | Director | 14 Oct 1997 | 24 Jul 2009 | British | 79 years |
| Emily Ann Mousley | Director | 14 Apr 2011 | 8 Jul 2016 | British | 58 years |
| Frederick William Le Grice | Secretary | 16 Oct 1992 | 22 Nov 2001 | British | - |
| Gerard Patrick Degaute | Director | 11 May 1995 | 31 May 2013 | British | 72 years |
| John Stephen Sadler | Director | 16 Oct 1992 | 30 Apr 1998 | British | 96 years |
| Kenneth Rowland Thomas | Director | 16 Oct 1992 | 31 Aug 1997 | British | 99 years |
| Kirsty Ann-marie Wilman | Director | 19 Mar 2018 | 31 May 2024 | British | 46 years |
| Leslie Victor Hewitt | Director | 16 Oct 1992 | 31 Mar 1993 | British | 95 years |
| Lionel Stephen Sampson | Director | 14 Oct 1997 | 31 Aug 2010 | British | 71 years |
| Lord Clarke | Director | 13 Apr 1993 | 17 Apr 1997 | British | 94 years |
| Mark Jonathon Anson | Director | 31 Jan 2006 | 31 Aug 2007 | American | 67 years |
| Michelle Simone Green | Secretary | 23 Nov 2001 | 22 Jun 2004 | British | - |
| Philip Edward Sellers | Director | 16 Oct 1992 | 31 Mar 1994 | British | 89 years |
| Philip Edward Sellers | Director | 11 May 1995 | 10 Jun 1998 | British | 89 years |
| Richard Anthony Harrold | Director | 11 May 1995 | 1 Dec 2005 | British | 80 years |
| Richard William Savage | Director | 11 May 1995 | 25 Sept 1995 | British | 76 years |
| Robert Alan Padgett | Director | 16 Oct 1992 | 11 May 1995 | British | 83 years |
| Terence Gordon Arthur | Director | 7 Jul 1998 | 30 Jun 2004 | British | 86 years |
| Timothy William John Turnbull | Director | 30 Sept 2010 | 31 Mar 2011 | British | 56 years |
| William Mcclory | Director | 7 Jul 1998 | 1 Apr 2021 | British | 76 years |