| Alice Hannah Black | Director | 31 Dec 2019 | 26 Aug 2022 | British | 42 years |
| Barry Roger Ingate | Director | N/A | 8 Apr 2002 | British | 83 years |
| Bruce Leonard Boys | Director | 28 Jun 1993 | 31 Mar 1998 | British | 83 years |
| Carolyn Tracy Cattermole | Director | 27 Sept 2012 | 30 Mar 2018 | British | 65 years |
| Catherine Bernadette Wheatley | Secretary | 30 Apr 1996 | 1 Jul 1998 | British | - |
| Colin Richard Clapham | Secretary | 16 Jan 2012 | 19 Oct 2018 | - | - |
| Derek Spencer | Director | 28 Jun 1993 | 31 Aug 1996 | British | 81 years |
| Francis Milne Kennedy | Director | N/A | 1 Mar 1996 | British | 87 years |
| Graham Douglas Gibson | Director | 8 Apr 2002 | 6 Oct 2004 | British | 77 years |
| Ian Charles Walden | Director | N/A | 28 Jun 1993 | British | 92 years |
| Ian Malcolm Ross | Director | 4 Mar 1996 | 30 Sept 2001 | British | 86 years |
| James John Jordan | Director | 4 Feb 2002 | 31 Dec 2019 | British | 64 years |
| James John Jordan | Secretary | 20 Dec 2004 | 26 Jan 2009 | British | - |
| John Lewis Addiscott | Director | N/A | 1 Mar 1996 | British | 79 years |
| John Malcolm Allen | Director | N/A | 28 Jun 1993 | British | 86 years |
| Karen Lorraine Atterbury | Secretary | 4 Feb 2002 | 16 Jan 2012 | British | - |
| Michael Andrew Lonnon | Secretary | 29 Nov 2023 | 9 Dec 2024 | - | - |
| Michael Andrew Lonnon | Director | 26 Aug 2022 | 9 Dec 2024 | British | 68 years |
| Molly Banham | Secretary | 19 Oct 2018 | 29 Nov 2023 | - | - |
| Peter William Irving Ingram | Secretary | N/A | 1 Jul 1994 | British | - |
| Roderick David Maciver | Director | N/A | 1 Mar 1996 | British | 77 years |
| Roger Keith Miller | Director | 6 Oct 2004 | 27 Sept 2012 | British | 68 years |
| Stefan Edward Bort | Director | 4 Mar 1996 | 4 Feb 2002 | British | 65 years |
| Stefan Edward Bort | Secretary | 1 Jul 1994 | 30 Apr 1996 | British | - |
| Stefan Edward Bort | Secretary | 1 Jul 1998 | 4 Feb 2002 | British | - |
| Steven Leven | Secretary | 1 Jul 1994 | 21 Feb 1996 | British | - |
| Stuart Martin Colvin | Director | 30 Mar 2018 | 11 May 2023 | British | 53 years |
| William Henry Crawford Dunn | Director | 31 Mar 1998 | 8 Apr 2002 | British | 78 years |