| Alice Read | Secretary | 13 Jul 2005 | 8 May 2006 | British | - |
| Carl Thomas Senior | Director | 4 Jan 2012 | 19 Jun 2012 | British | 48 years |
| Crispin Robert John Irvin | Director | 22 Mar 2017 | 28 Jul 2022 | British | 48 years |
| David Harry Mead | Director | 12 Feb 2007 | 29 Jun 2007 | British | 65 years |
| David John Cavanna | Director | 24 Jul 2013 | 31 Dec 2015 | British | 59 years |
| Desmond Richard Turner | Director | 12 Feb 2007 | 20 Jun 2013 | British | 66 years |
| Fiona Ann Barker | Director | 4 Jun 2010 | 21 Jun 2013 | British | 60 years |
| Gareth Owen Conway | Director | 4 Oct 2004 | 6 Dec 2019 | British | 60 years |
| George William Bayer | Secretary | 11 Feb 2008 | 12 Sept 2008 | Other | - |
| Gregory Martin Lawn | Director | 30 Nov 2020 | 13 May 2022 | New Zealander | 48 years |
| Hannah Elizabeth Shepherd | Secretary | 29 Sept 2010 | 22 Dec 2011 | - | - |
| Hannah Elizabeth Shepherd | Secretary | 5 Jan 2015 | 28 May 2015 | - | - |
| Hollie Rheanna Wood | Secretary | 22 Dec 2011 | 24 Jul 2013 | - | - |
| Jaya Subramaniyan | Director | 24 Jul 2013 | 1 Dec 2020 | Malaysian | 64 years |
| John Richard Kent | Director | 6 Dec 2012 | 31 May 2017 | British | 56 years |
| Katherine Dean | Secretary | 24 Jul 2013 | 18 Jun 2014 | - | - |
| Kevin Alan Singleton | Director | 12 Feb 2007 | 30 Nov 2011 | British | 70 years |
| Louisa Jane Jenkinson | Secretary | 17 Feb 2003 | 18 Oct 2004 | British | - |
| Lucy Anna Tsourous | Director | 12 Apr 2002 | 4 Oct 2004 | British | 57 years |
| Mary Bridget Kenny | Director | 29 Jun 2007 | 3 Dec 2008 | British | 61 years |
| Michael Connelly Anderson | Director | 16 Dec 2015 | 22 Mar 2017 | British | 64 years |
| Molly Ranger | Secretary | 22 Mar 2018 | 15 Aug 2019 | - | - |
| Naveen Patwary | Secretary | 15 Aug 2019 | 21 Oct 2020 | - | - |
| Nicola Suzanne Black | Secretary | 12 Apr 2002 | 17 Feb 2003 | British | - |
| Paul Emmanuel Mackey | Director | 12 Apr 2002 | 4 Oct 2004 | Irish | 67 years |
| Paul Jonathan Spencer | Director | 3 Feb 2009 | 4 Jun 2010 | British | 56 years |
| Pauline Louise Mcquillan | Secretary | 8 May 2006 | 11 Feb 2008 | British | - |
| Rebecca Louise Poole | Secretary | 18 Oct 2004 | 13 Jul 2005 | British | - |
| Robin Louis Henning Bencard | Director | 4 Oct 2004 | 1 Aug 2016 | British | 63 years |
| Romana Lewis | Secretary | 28 May 2015 | 8 Dec 2017 | - | - |
| Sarah Caroline Gott | Secretary | 1 Oct 2008 | 29 Sept 2010 | British | - |
| Simon Einar Long | Director | 15 Mar 2016 | 1 Oct 2020 | British | 52 years |
| Simon Findlay Purves | Director | 4 Oct 2004 | 17 Jan 2007 | British | 68 years |
| Sulagna Goswami | Secretary | 22 Oct 2020 | 25 Feb 2022 | - | - |
| Timothy Geoffrey Thorp | Director | 12 Apr 2002 | 7 Oct 2004 | British | 62 years |
| Tony Bhambhra | Secretary | 18 Jun 2014 | 5 Jan 2015 | - | - |
