| Alan Roberts | Director | 19 Mar 1996 | 31 Dec 1997 | British | 72 years |
| Alice Hannah Black | Director | 31 Dec 2019 | 26 Aug 2022 | British | 43 years |
| Anthony William Roberts | Director | 17 May 1991 | 1 Mar 1996 | British | 80 years |
| Colin Richard Clapham | Secretary | 1 Dec 2009 | 19 Oct 2018 | - | - |
| James John Jordan | Director | 31 Dec 2007 | 31 Dec 2019 | British | 65 years |
| James John Jordan | Secretary | 20 Dec 2004 | 23 Jan 2009 | British | - |
| James Phillips | Director | 19 Mar 1996 | 19 Apr 2006 | British | 75 years |
| James Phillips | Secretary | 17 May 1991 | 1 Mar 1996 | British | - |
| Jennifer Canty | Director | 24 Apr 2024 | 30 Sept 2025 | British | 33 years |
| Karen Lorraine Atterbury | Secretary | 4 Feb 2002 | 1 Dec 2009 | British | - |
| Katherine Elizabeth Hindmarsh | Director | 26 Aug 2022 | 1 Sept 2023 | British | 37 years |
| Michael Andrew Lonnon | Secretary | 29 Nov 2023 | 9 Dec 2024 | - | - |
| Michael Andrew Lonnon | Director | 17 Jul 2015 | 9 Dec 2024 | British | 69 years |
| Molly Banham | Secretary | 19 Oct 2018 | 29 Nov 2023 | - | - |
| Nicola Amanda Eleanor Hastie | Director | 19 Apr 2006 | 31 Dec 2007 | British | 64 years |
| Omolola Olutomilayo Adedoyin | Director | 1 Sept 2023 | 24 Apr 2024 | British | 51 years |
| Peter Anthony Carr | Director | 6 Feb 2008 | 30 Sept 2011 | British | 72 years |
| Peter Robert Andrew | Director | 30 Sept 2011 | 17 Jul 2015 | British | 67 years |
| Richard Seymour Waghorn | Director | 31 Dec 1997 | 31 Dec 2007 | British | 71 years |
| Roy James Harrison | Director | 18 Apr 1994 | 1 Mar 1996 | British | 79 years |
| Samuel Frank Pickstock | Director | 17 May 1991 | 18 Apr 1994 | British | 92 years |
| Stefan Edward Bort | Director | 1 Mar 1996 | 4 Feb 2002 | British | 66 years |
| Stefan Edward Bort | Secretary | 1 Mar 1996 | 4 Feb 2002 | British | - |
