| Andrew Mark Bull | Director | 19 Jun 1995 | 18 Nov 1998 | British | 73 years |
| Barry James Neaves | Director | 19 Jun 1995 | 30 Mar 2010 | White British | 78 years |
| Caroline Jane Waterer | Secretary | 17 Aug 2005 | 31 Jul 2016 | British | - |
| Christopher Gordon Trebilcock | Director | 21 Nov 2007 | 31 Dec 2018 | British | 69 years |
| Christopher Gordon Trebilcock | Secretary | 31 Jul 2016 | 31 Dec 2018 | - | - |
| Christopher Joseph Bond | Director | 31 Mar 2017 | 7 Sept 2021 | British | 68 years |
| Colin Norman Coles | Director | 29 Mar 1991 | 7 Nov 1998 | British | 85 years |
| Daniel Sabel | Secretary | 8 Sept 2021 | 31 Jan 2025 | - | - |
| David Browell Reay | Director | 24 Mar 2006 | 21 May 2008 | British | 52 years |
| David Fryman | Director | 24 Mar 2006 | 20 May 2008 | British | 52 years |
| David Fryman | Director | 24 Mar 2006 | 5 Nov 2012 | British | 52 years |
| Edward Harry Borrill | Director | 27 Jan 1998 | 25 Apr 2007 | British | 91 years |
| Elspeth Mackenzie | Director | 12 Aug 1993 | 7 Dec 2006 | British | 67 years |
| Elspeth Mackenzie | Secretary | 28 Nov 1994 | 4 Oct 1995 | British | - |
| Eric Alfred French | Director | 29 Mar 1991 | 24 Jul 1991 | British | 100 years |
| Ezikiel Olusegun Esho | Secretary | 29 Mar 1991 | 3 Oct 1994 | British | - |
| Gareth Jones | Director | 7 Dec 2006 | 2 Jul 2025 | British | 64 years |
| Gavin Scott | Director | 29 Mar 1991 | 12 Aug 1993 | British | 95 years |
| Giuliano Riccardo Todeschini | Director | 24 Jul 1991 | 12 Aug 1993 | Italian | 92 years |
| John Colin Haslam | Director | 9 Oct 1991 | 26 Sept 1993 | British | 96 years |
| John Methuen Robertson | Director | 29 Mar 1991 | 4 May 1993 | British | 110 years |
| John Thomas Lane | Director | 29 Mar 1991 | 21 Oct 1997 | British | 99 years |
| Jolyon David Hewer Griffiths | Director | 23 Aug 2012 | 31 Mar 2017 | British | 65 years |
| Kenneth Henry Neville | Director | 29 Mar 1991 | 30 Mar 1996 | British | 109 years |
| Laurence Martin Soden | Director | 19 Jun 1995 | 30 Mar 2010 | British | 84 years |
| Malcolm Campbell-lee | Director | 29 Mar 1991 | 20 Feb 1994 | British | 108 years |
| Mark Hanson | Director | 24 Oct 1995 | 28 Apr 2000 | British | 72 years |
| Mike De'ath | Director | 1 Apr 2010 | 23 Aug 2012 | British | 67 years |
| Patrick James Elliot | Director | 29 Mar 1991 | 24 Jul 1991 | British | 99 years |
| Richard Jeremy Ian Mais | Director | 24 Mar 2006 | 4 Mar 2010 | British | 81 years |
| Robert David Green | Director | 8 Sept 2021 | 31 Mar 2025 | British | 71 years |
| Tracy Helen Allison | Director | 7 Dec 2006 | 14 Sept 2007 | British | 61 years |
| Vanessa Grisdale | Director | 8 Apr 1992 | 12 Aug 1993 | British | 78 years |
| Yvonne Grant-appleton | Secretary | 4 Oct 1995 | 17 Aug 2005 | British | - |
| Zhonghua Gloria Yang | Director | 1 Jan 2019 | 31 Mar 2023 | British | 47 years |
| Zhonghua Yang | Secretary | 1 Jan 2019 | 7 Sept 2021 | - | - |