| Amanda Jane Emilia Massie | Director | 22 Nov 2005 | 8 Mar 2013 | British | 56 years |
| Amanda Jane Emilia Massie | Secretary | 18 Oct 2004 | 8 Mar 2013 | British | - |
| Anoop Kang | Director | 29 Feb 2016 | 21 Dec 2016 | British | 52 years |
| Bethan Anne Elizabeth Melges | Director | 23 Jun 2016 | 9 Sept 2019 | British | 51 years |
| Carl Sjogren | Secretary | 30 Jul 2010 | 7 Nov 2011 | - | - |
| Catherine Engmann | Secretary | 21 Apr 2006 | 22 May 2009 | British | - |
| Christine Ann Shaw | Secretary | 17 Jun 2011 | 2 May 2012 | - | - |
| David Frank Tilston | Director | 3 Feb 2011 | 17 Jun 2011 | British | 69 years |
| David John Binns | Director | 23 Jul 2007 | 31 Mar 2009 | British | 71 years |
| David William Alexander Hills | Director | 19 May 2007 | 1 Oct 2008 | British | 68 years |
| George Ernest Puddephatt | Director | 22 Jun 1991 | 1 Apr 1996 | British | 92 years |
| Giles Stewart Pearson | Director | 8 Aug 2013 | 29 Feb 2016 | British | 58 years |
| Hugh Charles Parkman | Director | 22 Jun 1991 | 22 Jul 1999 | British | 89 years |
| Jacob Mathew Sankurikkal | Director | 19 May 2007 | 10 Mar 2010 | Indian | 58 years |
| Kelly Lee | Secretary | 26 May 2009 | 30 Jul 2010 | British | - |
| Kevin Andrew Young | Director | 22 Nov 2005 | 31 Aug 2010 | British | 67 years |
| Nicky Cobden | Secretary | 2 May 2012 | 29 Aug 2013 | - | - |
| Paul Adrian Rayner | Director | 31 Jan 2013 | 8 Jun 2015 | British | 65 years |
| Paul David England | Director | 8 Sept 2010 | 8 Aug 2013 | British | 56 years |
| Philip Higgins | Director | 9 Sept 2019 | 24 Sept 2021 | British | 57 years |
| Philip John Davies | Director | 22 Jun 1991 | 31 Oct 2004 | British | 74 years |
| Piers Benedict Clark | Director | 19 May 2007 | 31 Dec 2009 | British | 57 years |
| Richard Alec Preece | Secretary | 22 Jun 1991 | 8 Dec 2004 | British | - |
| Richard Harry Cuthbert | Director | 8 Sept 2010 | 5 Oct 2011 | British | 73 years |
| Robert Hutchison Penman | Director | 18 Mar 2004 | 2 Nov 2009 | British | 69 years |
| Rodney Hewer Harris | Director | 17 Jun 2011 | 25 Jan 2013 | British | 65 years |
| Roger William Pearce | Director | 22 Jun 1991 | 3 Dec 2005 | British | 84 years |
| Simon David Martle | Director | 26 Oct 2018 | 31 Oct 2019 | British | 56 years |
| Thomas Lee Foreman | Director | 21 Dec 2016 | 26 Oct 2018 | British | 50 years |
| Victoria Elizabeth Hames | Secretary | 22 Nov 2005 | 1 Mar 2006 | British | - |