| Allyson Mary Teresa Ablett | Secretary | 18 Jan 2008 | 31 Dec 2008 | British | - |
| Anoop Kang | Director | 7 Jan 2016 | 21 Dec 2016 | British | 52 years |
| David Christopher Rogan | Director | 5 Jan 2007 | 15 Jan 2007 | British | 66 years |
| David Christopher Rogan | Secretary | 5 Jan 2007 | 26 Apr 2007 | British | - |
| David Neville Benson | Director | 8 Jul 2013 | 9 Oct 2015 | British | 56 years |
| Deborah Pamela Hamilton | Secretary | 8 Jul 2013 | 22 Sept 2014 | - | - |
| Donald William Macdiarmid | Director | 6 Sept 2012 | 8 Jul 2013 | British | 65 years |
| Haydn Jonathan Mursell | Director | 8 Jul 2013 | 16 Apr 2015 | British | 55 years |
| Hugh Edward Earle Raven | Director | 8 Jul 2013 | 16 Apr 2015 | British | 55 years |
| Mark Antony Hazlewood | Director | 13 Mar 2012 | 8 Jul 2013 | British | 60 years |
| Matthew Armitage | Director | 16 Apr 2015 | 16 Jul 2015 | British | 54 years |
| Matthew Armitage | Secretary | 12 Dec 2014 | 16 Jul 2015 | - | - |
| Matthew Stevens | Director | 9 Dec 2009 | 13 Mar 2012 | British | 57 years |
| Michael Edward Dunn | Director | 21 Oct 2008 | 8 Jan 2010 | British | 58 years |
| Philip Windover Fellowes-prynne | Director | 21 Oct 2008 | 6 Sept 2012 | British | 64 years |
| Richard Alan Kirk | Secretary | 26 Apr 2007 | 18 Jan 2008 | British | - |
| Robert Ian Findlater | Director | 5 Jan 2007 | 7 May 2010 | British | 71 years |
| Simon John Howell | Secretary | 1 Jan 2009 | 8 Jul 2013 | British | - |
| William Alexander Edwards | Director | 15 Jan 2007 | 26 Oct 2007 | British | 69 years |