| Anthony Paul Duckett | Secretary | 31 May 1991 | 1 Nov 2002 | British | - |
| Christopher Carney | Director | 2 May 2008 | 26 Jan 2011 | British | 51 years |
| Christopher Hewetson Payne | Director | 22 Jun 2000 | 31 Mar 2003 | British | 66 years |
| Colin Richard Clapham | Secretary | 16 Jan 2012 | 5 Dec 2016 | - | - |
| Colin Richard Clapham | Director | 17 Jul 2015 | 31 Oct 2019 | British | 80 years |
| David Henry Livingstone | Director | 1 Apr 2004 | 31 Dec 2005 | British | 69 years |
| Ian Calvert Sutcliffe | Director | 31 Mar 2006 | 14 Apr 2008 | British | 66 years |
| Ian Courts | Director | 31 May 1991 | 22 Jun 2000 | British | 76 years |
| Ian Henry Drummond Jones | Director | 31 May 1991 | 31 Oct 1991 | British | 92 years |
| James John Jordan | Secretary | 31 Dec 2007 | 6 Feb 2008 | British | - |
| James Martin Storer | Director | 23 Sept 1996 | 1 Nov 2002 | British | 68 years |
| James Phillips | Secretary | 1 Nov 2002 | 19 Apr 2006 | British | - |
| Jennifer Canty | Director | 24 Apr 2024 | 30 Sept 2025 | British | 32 years |
| Jennifer Canty | Secretary | 24 Apr 2024 | 30 Sept 2025 | - | - |
| John Begbie | Director | 14 Nov 1991 | 23 Sept 1996 | British | 79 years |
| John David Bottom | Director | 31 May 1991 | 31 May 1995 | British | 89 years |
| Jonathan Charles Murrin | Director | 3 Jul 2007 | 2 May 2008 | British | 56 years |
| Karen Lorraine Atterbury | Secretary | 1 Jan 2009 | 16 Jan 2012 | British | - |
| Katherine Elizabeth Hindmarsh | Secretary | 5 Dec 2016 | 7 Jul 2023 | - | - |
| Katherine Elizabeth Hindmarsh | Director | 31 Oct 2019 | 9 Oct 2023 | British | 36 years |
| Keith Morgan Cushen | Director | 1 Nov 2002 | 31 Dec 2003 | British | 78 years |
| Leslie Richard Angell | Director | 31 May 1991 | 22 Jun 2000 | British | 80 years |
| Michael Andrew Lonnon | Director | 27 Jul 2015 | 9 Dec 2024 | British | 68 years |
| Nicola Amanda Eleanor Hastie | Secretary | 19 Apr 2006 | 31 Dec 2007 | British | - |
| Omolola Olutomilayo Adedoyin | Director | 9 Oct 2023 | 24 Apr 2024 | British | 50 years |
| Omolola Olutomilayo Adedoyin | Secretary | 7 Jul 2023 | 24 Apr 2024 | - | - |
| Paul Ernest Healey | Director | 22 Jun 2000 | 31 Mar 2004 | British | 76 years |
| Peter Anthony Carr | Director | 24 Apr 2008 | 30 Sept 2011 | British | 71 years |
| Peter Anthony Carr | Secretary | 6 Feb 2008 | 1 Jan 2009 | British | - |
| Peter Martin Truscott | Director | 1 Jan 2006 | 27 Jul 2015 | British | 63 years |
| Peter Robert Andrew | Director | 22 Dec 2008 | 17 Jul 2015 | British | 66 years |
| Peter Timothy Redfern | Director | 1 Feb 2004 | 31 Mar 2006 | British | 55 years |
| Philip Alfred Flatman | Director | 31 May 1991 | 30 Apr 1999 | British | 85 years |
| Raymond Anthony Peacock | Director | 2 May 2008 | 22 Dec 2008 | British | 59 years |
| Robert Alec Wood | Director | 31 May 1991 | 22 Jun 2000 | British | 83 years |
| Robert Mark Taylor | Director | 31 May 1991 | 30 Sept 1991 | British | 74 years |
| Robert Stephen Lidgate | Director | 18 Apr 1994 | 1 Nov 2002 | British | 80 years |
| Rodney Melvin Lowe | Director | 20 Nov 2002 | 31 Dec 2004 | British | 67 years |
| Roy William Stephen Willer | Director | 20 Nov 2002 | 31 Dec 2005 | British | 61 years |
| Stephen Adrian Jenkins | Director | 1 Jan 2006 | 3 Jul 2007 | British | 58 years |
| Stephen William Biart | Director | 31 May 1991 | 1 Aug 1997 | British | 72 years |