| Alan Robert Young | Director | 1 Nov 1992 | 31 Jul 1995 | British | 88 years |
| Alasdair Christopher Gillies | Director | 3 Feb 1993 | 13 Sept 1995 | British | 68 years |
| Amanda Louise Knott | Secretary | 2 Apr 2007 | 25 Jul 2013 | British | - |
| Andrew Ralph Humphries | Director | 2 Dec 1998 | 11 Oct 2000 | British | 62 years |
| Ann Claire Blundell | Secretary | 25 Jul 2013 | 17 Mar 2014 | - | - |
| Anthony Paul Kenmir | Director | 23 Oct 2009 | 25 Jul 2013 | British | 70 years |
| Christopher Michael Eric Powell | Director | 17 Aug 2006 | 25 Jun 2008 | British | 70 years |
| Corina Katherine Ross | Secretary | 14 Mar 2011 | 25 Jul 2013 | British | - |
| David Alan Seviour | Director | 2 Dec 1998 | 29 Aug 2003 | British | 90 years |
| Gail Anne Read | Director | 2 Nov 1992 | 13 Sept 1995 | British | 80 years |
| George Higginson | Director | 2 Feb 2001 | 15 Jul 2005 | British | 63 years |
| Helen Frances Leigh Rogers | Secretary | 14 Jul 2008 | 2 Dec 2011 | British | - |
| Ian Ritchie | Secretary | 25 Jul 2013 | 17 Mar 2014 | - | - |
| Isla Rebecca Hale | Secretary | 6 Sept 2004 | 30 Jun 2006 | British | - |
| James Edward Bullimore | Director | 10 Mar 2000 | 15 May 2002 | British | 75 years |
| James Richard Sykes | Director | 17 Aug 2006 | 23 Oct 2009 | British | 65 years |
| Jayne Michelle Meacham | Secretary | 2 Apr 2007 | 2 May 2008 | British | - |
| John Peter Jewitt | Director | 13 Sept 1995 | 13 May 1997 | British | 72 years |
| Jonathan Vaughan-williams | Director | 1 Apr 2016 | 28 Apr 2017 | British | 59 years |
| Keith Reginald Baldwin | Director | 1 Nov 1992 | 31 Aug 2003 | British | 78 years |
| Mark Derek Davies | Director | 2 Dec 1998 | 11 Sept 2003 | British | 65 years |
| Mark John Cooper | Director | 2 Dec 1998 | 31 May 2005 | British | 61 years |
| Michael Andrew Ferns | Director | 22 Aug 2003 | 17 Aug 2006 | British | 62 years |
| Michael Harris | Director | 20 Jan 1999 | 10 Mar 2000 | British | 61 years |
| Neil James Evans | Director | 17 Aug 2006 | 31 Mar 2016 | British | 69 years |
| Nigel Lowe | Secretary | 30 Jun 2006 | 2 Apr 2007 | British | - |
| Peter Charles Howe | Secretary | 1 Nov 1992 | 6 Sept 2004 | British | - |
| Peter Ellen | Director | 13 May 1997 | 2 Dec 1998 | British | 74 years |
| Peter John Steer | Director | 13 Sept 1995 | 2 Dec 1998 | British | 73 years |
| Phil Andrew Hodkinson | Director | 1 Nov 1992 | 3 Feb 1993 | British | 68 years |
| Phil Andrew Hodkinson | Director | 13 Sept 1995 | 22 Nov 2000 | British | 68 years |
| Philip Smith | Director | 1 Nov 1992 | 20 Sept 1996 | British | 79 years |
| Shaun Tony Hicks | Director | 25 Jul 2013 | 27 Feb 2023 | British | 58 years |
| Timothy James Grant | Director | 30 May 2017 | 22 Aug 2023 | British | 62 years |