| Alan Charles Osborne Bell | Director | 9 Mar 1995 | 6 May 1998 | British | 81 years |
| Andrew David Pomfret | Director | 1 Aug 1999 | 28 Feb 2014 | British | 66 years |
| Andrew Timothy Morris | Director | 1 Nov 2000 | 31 Dec 2012 | British | 62 years |
| Caroline Mary Burton | Director | 1 Nov 2003 | 14 May 2013 | British | 76 years |
| Catherine Rosemary Reid Avery | Director | 6 Jan 2010 | 14 May 2013 | British | 66 years |
| Colin Martin Clark | Director | 24 Oct 2018 | 28 Jul 2022 | British | 67 years |
| Colin William Kinloch | Director | 22 Jun 1993 | 6 May 1998 | British | 84 years |
| David Terrence Digby Harrel | Director | 1 Dec 2007 | 11 May 2017 | British | 78 years |
| Edward James Wingfield Lifford | Director | 25 Sept 1996 | 31 Dec 2006 | British | 77 years |
| Gavin Charles Flaxman | Secretary | 1 Jan 1994 | 17 Oct 2000 | British | - |
| Geoffrey Mark Powell | Director | 9 Mar 1995 | 11 May 2011 | British | 80 years |
| Ian Michael Buckley | Director | 21 Dec 2001 | 31 Dec 2012 | British | 76 years |
| Ian Pearce Harvey | Director | 22 Jun 1991 | 3 Sept 1999 | British | 82 years |
| James Christopher Barclay | Director | 1 Nov 2003 | 5 May 2010 | British | 81 years |
| James Michael Beale Cayzer-colvin | Director | 29 May 2002 | 1 Dec 2007 | British | 61 years |
| James Neilson Pettigrew | Director | 6 Mar 2017 | 6 May 2021 | British | 68 years |
| James William Dean | Director | 1 Nov 2013 | 5 May 2022 | British | 69 years |
| Jennifer Elizabeth Mathias | Director | 1 Apr 2019 | 31 Dec 2023 | British | 52 years |
| John Edward Tuck | Director | 22 Jun 1991 | 24 Sept 2002 | British | 80 years |
| John Edward Tuck | Secretary | 22 Jun 1991 | 1 Jan 1994 | British | - |
| John Giles Selby Coode-adams | Director | 1 Jun 1999 | 22 Dec 2008 | British | 88 years |
| John Michael May | Director | 1 Dec 2007 | 1 Dec 2010 | British | 71 years |
| John Nicholas Mcalpine Entwistle | Director | 8 Oct 1992 | 6 May 1998 | British | 85 years |
| John Robert Cecil Manners | Director | 22 Jun 1991 | 21 Dec 1992 | British | 103 years |
| John Roland Leigh | Director | 22 Jun 1991 | 30 Sept 1993 | British | 93 years |
| Jonathan Garnier Ruffer | Director | 22 Jun 1991 | 26 Apr 1994 | British | 75 years |
| Kathryn Ann Matthews | Director | 6 Jan 2010 | 12 Sept 2018 | British | 67 years |
| Mark Hadden Pearson | Director | 25 Sept 1996 | 31 Oct 2000 | British | 83 years |
| Mark Patrick Nicholls | Director | 1 Dec 2010 | 5 Mar 2021 | British | 77 years |
| Mark Robertshaw | Director | 7 Mar 2006 | 5 May 2010 | British | 58 years |
| Mark William Fishwick Leather | Director | 1 Jan 1994 | 31 Dec 2003 | British | 81 years |
| Michael Lenox Ingall | Director | 31 Dec 1985 | 7 May 2003 | British | 85 years |
| Michael Sydney Bryant | Director | 22 Jun 1991 | 31 Jan 1997 | British | 82 years |
| Oliver Duncan Stanley | Director | 22 Jun 1991 | 10 May 2000 | British | 101 years |
| Oliver Roebling Panton Corbett | Director | 7 Mar 2006 | 3 Jun 2014 | British | 61 years |
| Paul Dominic Grant Chavasse | Director | 26 Sept 2001 | 3 Nov 2016 | British | 62 years |
| Paul Egerton Vernon | Director | 1 Dec 2001 | 31 Dec 2005 | British | 81 years |
| Peter Graham Pearson Lund | Director | 5 Jan 2005 | 31 Mar 2010 | British | 79 years |
| Philip Luard Howell | Director | 1 Dec 2013 | 9 May 2019 | British | 71 years |
| Richard Edwin Loader | Secretary | 17 Oct 2000 | 30 Apr 2016 | British | - |
| Richard Ian Smeeton | Director | 1 Nov 2000 | 31 Dec 2012 | British | 62 years |
| Richard Patrick Lanyon | Director | 20 Mar 1996 | 10 May 2012 | British | 75 years |
| Robert Paul Stockton | Director | 24 Sept 2008 | 18 Aug 2025 | British | 61 years |
| Roy Alfred Morris | Director | 22 Jun 1991 | 31 Dec 2007 | British | 85 years |
| Sebastian David Rathbone | Director | 22 Jun 1991 | 12 May 1994 | British | 94 years |
| Simon Peter Mckie | Director | 22 Jun 1991 | 30 Sept 1993 | British | 70 years |
| Susan Mary Desborough | Director | 1 Oct 2004 | 28 Nov 2007 | British | 66 years |
| William Halliday Keatley | Director | 9 Mar 1995 | 30 Jun 2002 | British | 91 years |
| William Rathbone | Director | 25 Jul 1994 | 31 Dec 2003 | British | 90 years |