| Armel Conyers Cates | Director | 27 Feb 2001 | 24 Apr 2012 | British | 83 years |
| Caroline Janet Banszky | Director | 29 Jan 2002 | 31 Aug 2016 | British | 73 years |
| Christopher Charles Biddulph Duffett | Director | 5 May 1992 | 9 Apr 2002 | British | 83 years |
| Christopher Smith | Director | 1 Mar 2009 | 11 Apr 2018 | British | 78 years |
| David Frank Norris | Director | 2 Dec 1992 | 14 Dec 1993 | British | 79 years |
| Denyse Monique Anderson | Director | 2 Dec 1992 | 14 Dec 1993 | British | 73 years |
| Douglas Christopher Patrick Mcdougall | Director | 21 Oct 1998 | 10 Apr 2013 | British | 82 years |
| Ewen Cameron Stewart Macpherson | Director | 6 Feb 1998 | 3 Apr 2001 | British | 84 years |
| Foster Ferrier Harvey Charlton | Director | 5 May 1992 | 25 Apr 1995 | British | 103 years |
| Graham Idris Lane | Director | 2 Dec 1992 | 14 Dec 1993 | British | 90 years |
| Howard Clive Rumbelow | Director | 5 May 1992 | 19 Oct 1993 | British | 93 years |
| Hugh Daniel Osborne | Director | 5 May 1992 | 21 Apr 1998 | British | 99 years |
| John Alston Morrell | Director | 5 May 1992 | 21 Apr 1998 | British | 99 years |
| John Anderson Kay | Director | 28 Sept 2004 | 9 Apr 2014 | British | 78 years |
| John Edwards | Director | 18 Mar 1997 | 15 Apr 2003 | British | 85 years |
| John Jeremy Mckinnell Potter | Director | 5 May 1992 | 30 Nov 1992 | British | 89 years |
| John Jeremy Mckinnell Potter | Secretary | 5 May 1992 | 17 Nov 1992 | British | - |
| John Kenneth Howell | Secretary | 17 Nov 1992 | 5 Sept 1997 | British | - |
| John Maxwell Kennedy | Director | 1 Jan 1994 | 28 Mar 2000 | British | 92 years |
| Julian Robert Mason-jebb | Director | 2 Dec 1992 | 14 Dec 1993 | British | 71 years |
| Katie Elizabeth Thorpe | Director | 1 Jan 2019 | 11 Sept 2020 | British | 47 years |
| Kenneth William Ballard Inglis | Director | 24 Mar 1995 | 12 Apr 2005 | British | 83 years |
| Mark George Orlando Bridgeman | Director | 15 Mar 2013 | 7 Apr 2022 | British | 58 years |
| Michael Charles Adams | Director | 4 Aug 2016 | 22 Oct 2017 | British | 63 years |
| Peter Michael Skeggs | Secretary | 20 Jan 1998 | 19 Sept 2000 | British | - |
| Raymond Percival St George Cazalet | Director | 5 May 1992 | 19 Oct 1993 | British | 95 years |
| Richard Forbes Thomas | Director | 2 Dec 1992 | 14 Dec 1993 | British | 82 years |
| Richard Lawrence Bristow | Director | 5 May 1992 | 28 Mar 2000 | British | 97 years |
| Robert James Williams | Director | 19 Oct 1993 | 7 Apr 2009 | British | 78 years |
| Robert James Williams | Secretary | 5 Sept 1997 | 20 Jan 1998 | British | - |
| Robert John Laing | Director | 2 Apr 2012 | 7 Apr 2021 | British | 73 years |
| Timothy Michael James Fullwood | Director | 22 Oct 2017 | 1 Jan 2018 | British | 71 years |
| Timothy Nicholas Bond | Director | 14 Apr 2015 | 28 Mar 2024 | British | 64 years |