| Edward Johnson | Director | 12 Sept 2001 | 23 Sept 2003 | British | 54 years |
| Edward Johnson | Secretary | 1 May 2000 | 23 Sept 2003 | British | - |
| Emma Mary Rice | Secretary | 23 Sept 2003 | 25 Feb 2010 | British | - |
| John Richard Sale | Director | 13 Dec 1992 | 31 Mar 2002 | British | 63 years |
| John Stanley Burton | Director | 1 Mar 1995 | 31 Jul 1999 | British | 84 years |
| John Stanley Burton | Secretary | 1 Apr 1995 | 31 Jul 1999 | British | - |
| Julia Elizabeth Cove-smith | Director | 8 Jun 2020 | 23 Feb 2024 | British | 54 years |
| Katherine Gadman | Director | 1 Oct 1998 | 25 Nov 1998 | American | 65 years |
| Matthew Dobson | Director | 14 Oct 2003 | 14 Feb 2014 | English | 60 years |
| Matthew Frederick William Rice | Director | 13 Dec 1992 | 11 Mar 2020 | British | 64 years |
| Peregrine Marcus Hungerford Pollen | Director | 13 Dec 1992 | 30 Dec 2004 | British | 63 years |
| Peregrine Marcus Hungerford Pollen | Secretary | 13 Dec 1992 | 1 Apr 1995 | British | - |
| Peregrine Marcus Hungerford Pollen | Secretary | 31 Jul 1999 | 1 May 2000 | British | - |
| Roy David Balint-kurti | Secretary | 15 Oct 2015 | 13 Jan 2023 | - | - |
| Roy David Balint-kurti | Director | 11 Mar 2020 | 13 Jan 2023 | British | 56 years |
| Stephen Hyde | Secretary | 25 Feb 2010 | 9 Jun 2011 | - | - |
| Trevor Gordon Dyer | Director | 28 May 2002 | 12 Jan 2006 | British | 68 years |
