| Alun Hughes Griffiths | Director | 18 Nov 2005 | 30 Jul 2014 | British | 72 years |
| Amanda Jane Emilia Massie | Secretary | 7 Feb 2000 | 15 Sept 2004 | British | - |
| Ashley Louise Gerrard | Secretary | 4 Nov 2016 | 28 Sept 2017 | - | - |
| Barry Cecil Hutt | Director | 20 Sept 1992 | 22 Feb 2000 | British | 78 years |
| Basil Sawczuk | Director | 18 Jan 1999 | 1 Jun 2000 | British | 72 years |
| Catherine Elizabeth Lindsay | Secretary | 4 Nov 2016 | 28 Sept 2017 | - | - |
| David Buckland | Director | 2 Dec 1996 | 31 Jan 2007 | British | 81 years |
| David Graham Morgan | Director | 20 Sept 1992 | 2 Dec 1996 | British | 83 years |
| David Thirkettle | Director | 20 Sept 1992 | 2 Dec 1996 | British | 91 years |
| Heath Stewart Drewett | Director | 19 Jun 2009 | 15 Dec 2017 | British | 60 years |
| Helen Alice Baker | Secretary | 1 Jan 2008 | 4 Nov 2016 | British | - |
| Ian Robert Purser | Director | 15 Jul 2004 | 30 Jun 2011 | British | 75 years |
| Ian Stanley Tempest | Director | 18 Jan 1999 | 14 Feb 2007 | British | 68 years |
| James Constantine Stuart Mcclean | Director | 18 Nov 2005 | 24 Mar 2006 | British | 67 years |
| John Anthony Barrow | Director | 20 Sept 1992 | 31 Dec 1993 | Australian | 78 years |
| John Richard Cherrington | Director | 18 Jan 1999 | 1 Jan 2007 | British | 82 years |
| Katie Charmian David | Secretary | 28 Mar 2002 | 4 Nov 2002 | British | - |
| Martin Owen Parsons | Director | 20 Sept 1992 | 16 Apr 1993 | British | 71 years |
| Martin Vernon Stearman | Director | 7 Mar 1994 | 2 Dec 1996 | British | 85 years |
| Michael Makepeace Eugene Jefferies | Director | 10 Feb 2004 | 31 Jul 2006 | British | 82 years |
| Paul Henry Tanner | Director | 20 Sept 1992 | 31 Mar 1995 | British | 83 years |
| Peter Hamilton Blockley | Director | 20 Sept 1992 | 23 Aug 1993 | British | 84 years |
| Philip Stephen James Davis | Secretary | 9 May 2005 | 30 Sept 2007 | British | - |
| Richard Howarth Tomalin | Secretary | 20 Sept 1992 | 28 Mar 2002 | British | - |
| Richard Webster | Director | 1 Jan 2012 | 31 Aug 2017 | British | 52 years |
| Richard Webster | Secretary | 4 Nov 2002 | 4 Nov 2016 | British | - |
| Robert James Macleod | Director | 27 May 2003 | 19 Jun 2009 | British | 62 years |
| Stephen Robert Billingham | Director | 27 May 2003 | 24 Aug 2004 | British | 68 years |
| Steven Johnson | Director | 1 Jul 2011 | 30 Nov 2011 | British | 77 years |
| Thomas Jeremy Wright | Director | 20 Sept 1992 | 2 Mar 2007 | British | 69 years |
| Timothy Bevan Moore | Director | 2 Dec 1996 | 1 Jun 2000 | British | 80 years |
| Victoria Elizabeth Hames | Secretary | 15 Sept 2004 | 3 Jan 2005 | British | - |