| Adrian Michael Gillooly | Director | 2 Jul 2003 | 15 Feb 2008 | British | 55 years |
| Alastair Bradshaw | Secretary | 16 Dec 2011 | 3 Mar 2014 | - | - |
| Alexandra Dadd | Secretary | 30 Jul 2008 | 30 Jan 2009 | Other | - |
| Andrew Christopher Lewis | Director | 16 Jan 2001 | 11 Feb 2009 | British | 60 years |
| Anthony Roy Foster | Secretary | 11 Jan 2006 | 15 Feb 2008 | British | - |
| Benjamin James Marks | Director | 16 Dec 2011 | 21 Dec 2015 | British | 48 years |
| Claire Puttergill | Secretary | 16 Jan 2001 | 17 Oct 2003 | British | - |
| Elaine Anne Driver | Secretary | 3 Mar 2014 | 8 Aug 2016 | - | - |
| Elizabeth Taylor | Secretary | 1 Feb 2004 | 30 Sept 2005 | British | - |
| Gemma Parsons | Secretary | 8 Aug 2016 | 4 May 2018 | - | - |
| Jared Stephen Philip Cranney | Secretary | 4 May 2018 | 21 Oct 2019 | - | - |
| Jeffery Thomas Skinner | Director | 16 Jan 2001 | 8 May 2003 | British | 68 years |
| John Richard Vail | Director | 16 Jan 2001 | 22 Mar 2013 | British | 88 years |
| Nicolas Guy Simpkin | Director | 15 Feb 2008 | 23 Sept 2015 | British | 56 years |
| Richard James Stearn | Director | 11 Feb 2009 | 16 Dec 2011 | British | 57 years |
| Richard James Stearn | Secretary | 30 Jan 2009 | 16 Dec 2011 | British | - |
| Robert Charles Grenville Perrins | Secretary | 15 Feb 2008 | 30 Jul 2008 | British | - |
| Roger St John Hulton Lewis | Director | 16 Jan 2001 | 31 Jul 2007 | British | 78 years |
| Wendy Joan Pritchard | Secretary | 15 Jan 2004 | 1 Feb 2004 | British | - |
