| Alastair Bradshaw | Secretary | 16 Dec 2011 | 3 Mar 2014 | - | - |
| Alexandra Dadd | Secretary | 30 Jul 2008 | 30 Jan 2009 | Other | - |
| Angus James Michie | Director | 15 Mar 2006 | 9 Oct 2009 | British | 59 years |
| Anthony Roy Foster | Secretary | 31 Jan 2006 | 15 Feb 2008 | British | - |
| Anthony William Pidgley | Director | 19 Oct 2015 | 26 Jun 2020 | British | 78 years |
| Benjamin James Marks | Director | 16 Dec 2011 | 21 Dec 2015 | British | 48 years |
| Brendan Twomey | Director | 15 Mar 2006 | 9 Oct 2009 | British | 62 years |
| David Martin Lowry | Director | 21 Dec 2015 | 31 Jul 2020 | British | 44 years |
| Elaine Anne Driver | Secretary | 3 Mar 2014 | 8 Aug 2016 | - | - |
| Elizabeth Taylor | Secretary | 14 Sept 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 | - | - |
| Jeremy Cole Allport | Director | 31 Jan 2006 | 15 Mar 2006 | British | 51 years |
| Karl Whiteman | Director | 19 Sept 2005 | 15 Mar 2006 | British | 60 years |
| Nicolas Guy Simpkin | Director | 9 Oct 2009 | 9 Oct 2009 | British | 56 years |
| Nicolas Guy Simpkin | Director | 9 Oct 2009 | 23 Sept 2015 | British | 56 years |
| Nigel Graham Davis | Director | 4 Jul 2006 | 9 Oct 2009 | British | 57 years |
| Paul Mark Vallone | Director | 19 Sept 2005 | 15 Mar 2006 | British | 61 years |
| Peter Victor Nesbitt | Director | 15 Mar 2006 | 9 Oct 2009 | British | 79 years |
| Philip James Curwen | Director | 19 Sept 2005 | 31 Jan 2006 | British | 53 years |
| Richard James Stearn | Director | 9 Oct 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 | 14 Sept 2004 | 31 Jul 2007 | British | 78 years |
| Stephen Philip Gorman | Director | 15 Mar 2006 | 20 Sept 2006 | British | 52 years |
