| Alasdair Nicholls | Director | 12 May 1995 | 14 May 2003 | British | 62 years |
| Alice Hannah Black | Director | 31 Dec 2019 | 26 Aug 2022 | British | 42 years |
| Andrew Locke | Director | 4 Nov 1998 | 9 Jul 2004 | British | 61 years |
| Anthony Wilby | Director | 4 Jul 2001 | 3 Jul 2007 | British | 73 years |
| Barry Andrew Judd | Director | 1 Mar 1993 | 31 May 1995 | British | 84 years |
| Caterina De Feo | Secretary | 15 Jul 2005 | 12 Nov 2007 | British | - |
| Christopher Carney | Director | 2 May 2008 | 2 May 2008 | British | 51 years |
| Clifford Robin Knott | Director | 1 Mar 1993 | 31 Mar 2002 | British | 83 years |
| Colin Richard Clapham | Secretary | 1 Jan 2009 | 19 Oct 2018 | Other | - |
| David Douglas Percival White | Director | 3 Mar 2003 | 30 Apr 2004 | British | 75 years |
| Graeme Reid Mccallum | Director | 30 Apr 2004 | 16 Jan 2007 | British | 78 years |
| James John Jordan | Director | 16 Oct 2008 | 31 Dec 2019 | British | 64 years |
| James John Jordan | Secretary | 12 Nov 2007 | 15 Apr 2008 | British | - |
| Jennifer Canty | Director | 24 Apr 2024 | 30 Sept 2025 | British | 32 years |
| Jennifer Canty | Secretary | 24 Apr 2024 | 30 Sept 2025 | - | - |
| John Howard Brooks | Director | 31 May 1995 | 31 Mar 2003 | British | 80 years |
| Jonathan Charles Murrin | Director | 2 Jul 2007 | 2 May 2008 | British | 56 years |
| Jonathan James Mantovani | Director | 1 Jan 2001 | 14 Feb 2003 | British | 57 years |
| Jonathan Philip Hastings | Director | 1 Mar 1993 | 12 May 1995 | British | 72 years |
| Jonathan Philip Hastings | Secretary | 1 Mar 1993 | 27 May 2005 | British | - |
| Katherine Elizabeth Hindmarsh | Director | 26 Aug 2022 | 1 Sept 2023 | British | 36 years |
| Michael Andrew Lonnon | Director | 17 Jul 2015 | 9 Dec 2024 | British | 68 years |
| Molly Banham | Secretary | 19 Oct 2018 | 29 Nov 2023 | - | - |
| Mungo Tennant | Director | 1 Jan 1996 | 12 Dec 1997 | British | 62 years |
| Nicholas Carey Smith | Director | 30 Apr 2004 | 3 Jul 2007 | British | 68 years |
| Omolola Olutomilayo Adedoyin | Director | 1 Sept 2023 | 24 Apr 2024 | British | 50 years |
| Omolola Olutomilayo Adedoyin | Secretary | 29 Nov 2023 | 24 Apr 2024 | - | - |
| Paul David Phipps | Director | 1 Jan 2001 | 4 Jul 2001 | British | 73 years |
| Peter Anthony Carr | Secretary | 15 Apr 2008 | 1 Jan 2009 | British | - |
| Peter Jeremy Chapman | Director | 4 Nov 1998 | 1 Jan 2001 | British | 71 years |
| Peter Morgan Steel | Director | 25 Aug 1993 | 18 Mar 1994 | British | 66 years |
| Peter Robert Andrew | Director | 9 Dec 2008 | 17 Jul 2015 | British | 66 years |
| Peter Thomas Johnson | Director | 1 Nov 2004 | 16 Oct 2008 | British | 71 years |
| Raymond Anthony Peacock | Director | 2 May 2008 | 2 May 2008 | British | 59 years |
| Ross John Hammond | Director | 26 Mar 2002 | 14 Feb 2003 | British | 69 years |
| Shinichi Sugiura | Director | 1 Mar 1993 | 9 Apr 1993 | Japanese | 76 years |
| Tadaomi Fujita | Director | 20 May 1993 | 24 Mar 1995 | Japanese | 84 years |
| Tanya Stote | Secretary | 27 May 2005 | 15 Jul 2005 | British | - |
| Toshihiro Hata | Director | 1 Mar 1993 | 24 Mar 1995 | British | 80 years |
| William John Holland-kaye | Director | 2 Jul 2007 | 2 May 2008 | British | 60 years |
| Yoshiki Sato | Director | 1 Mar 1993 | 9 Apr 1993 | Japanese | 74 years |
