| Alan Michael Holland | Director | 23 Mar 2012 | 30 Jun 2023 | British | 51 years |
| Andrew John Pilsworth | Director | 5 Oct 2012 | 31 Dec 2023 | British | 51 years |
| Andrew John Turnbull | Director | 13 Jul 1991 | 19 Nov 1998 | British | 90 years |
| Andrew Stephen Gulliford | Director | 3 Nov 2004 | 24 Oct 2008 | British | 63 years |
| Andrew Stephen Gulliford | Director | 4 Oct 2012 | 30 Jun 2023 | British | 63 years |
| Ann Octavia Peters | Director | 30 Jun 2015 | 31 Dec 2023 | British | 56 years |
| Colin Michael Cowdrey Of Tonbridge | Director | 27 Mar 1995 | 19 Nov 1998 | British | 93 years |
| David Crawford Bridges | Director | 24 Oct 2008 | 23 Mar 2012 | British | 58 years |
| David John Rivers Sleath | Director | 1 Jan 2006 | 22 Jun 2009 | British | 64 years |
| David Richard Proctor | Director | 18 Nov 2020 | 31 Dec 2023 | British | 52 years |
| Derek Robert Wilson | Director | 19 Nov 1998 | 4 Nov 2002 | British | 81 years |
| Donald Percival Bilton | Director | 13 Jul 1991 | 23 Sept 1998 | British | 104 years |
| Elizabeth Ann Blease | Secretary | 13 Oct 2008 | 3 Nov 2021 | Other | - |
| Gareth John Osborn | Director | 31 Aug 2010 | 31 Dec 2019 | British | 63 years |
| George Ralph Thomas | Director | 13 Jul 1991 | 31 Jan 1995 | British | 78 years |
| Gerald Henry Hirst | Director | 13 Jul 1991 | 19 Nov 1998 | British | 94 years |
| Hugh Derek Free | Director | 13 Jul 1991 | 19 Nov 1998 | British | 92 years |
| Ian Calvert Sutcliffe | Director | 22 Jun 2009 | 30 Mar 2011 | British | 66 years |
| John Anthony Nicholas Heawood | Director | 19 Nov 1998 | 4 Jul 2008 | British | 72 years |
| John Ernest Hodges | Director | 1 Sept 1992 | 30 Aug 1996 | British | 75 years |
| John Robert Probert | Secretary | 19 Nov 1998 | 8 Jul 2008 | British | - |
| Julia Foo | Secretary | 3 Nov 2021 | 23 May 2023 | - | - |
| Kevin John O'connor | Director | 24 Oct 2008 | 11 Sept 2009 | British | 64 years |
| Laurence Yolande Giard | Director | 4 Oct 2012 | 30 Jun 2015 | French | 55 years |
| Miles Andrew Graham Bilton | Director | 15 May 1998 | 19 Nov 1998 | British | 67 years |
| Philip Anthony Redding | Director | 24 Oct 2008 | 31 Jan 2020 | British | 57 years |
| Priya Ponnaiyah | Secretary | 1 Sept 1992 | 19 Nov 1998 | British | - |
| Richard Arthur Downard | Director | 13 Jul 1991 | 19 Nov 1998 | British | 93 years |
| Richard David Kingston | Director | 19 Nov 1998 | 31 Dec 2006 | British | 77 years |
| Roger John Taylor | Director | 1 Feb 1995 | 19 Nov 1998 | British | 86 years |
| Ronald Reuben Rosenblatt | Director | 13 Jul 1991 | 30 Jun 1994 | British | 82 years |
| Ronald Reuben Rosenblatt | Secretary | 13 Jul 1991 | 1 Sept 1992 | British | - |
| Ronald William Alfred Groom | Director | 13 Jul 1991 | 19 Nov 1998 | British | 95 years |
| Simon Andrew Carlyon | Director | 22 Jun 2009 | 4 Oct 2012 | Australian | 52 years |
| Siva Shankar | Director | 31 Dec 2006 | 24 Oct 2008 | British | 55 years |
| Stephen Mark Bailey | Director | 19 Nov 1998 | 31 Oct 2007 | British | 70 years |
| Timothy Robert Thomas Goodwin | Director | 1 Sept 1992 | 30 Sept 1996 | British | 90 years |
| Valerir Ann Lynch | Secretary | 8 Jul 2008 | 13 Oct 2008 | British | - |
| Vanessa Kate Simms | Director | 24 Oct 2008 | 21 Nov 2011 | British | 50 years |
| William James Dorward Moberly | Director | 2 Jan 1997 | 19 Nov 1998 | British | 87 years |
| William Kevin Kennedy | Director | 13 Jul 1991 | 4 Aug 1992 | British | 105 years |
| William Oliver Farrer | Director | 27 Mar 1995 | 28 Jun 1995 | British | 99 years |