| Adrian Charles Thompson | Director | 20 Feb 2001 | 31 Aug 2011 | British | 67 years |
| Alan Evan Davies | Director | 22 Dec 2010 | 25 Mar 2014 | British | 65 years |
| Alice Read | Secretary | 18 Jul 2005 | 8 May 2006 | British | - |
| Alistair Nigel Duncan Jones | Director | 18 Mar 2014 | 31 Dec 2015 | British | 61 years |
| Andrew Donner | Director | 22 Dec 2010 | 18 Oct 2018 | British | 68 years |
| Andrew Goldsworthy Gibbs | Director | 30 May 1992 | 20 Feb 2001 | British | 79 years |
| Belinda Jane Sprigg | Director | 16 Feb 1999 | 20 Feb 2001 | British | 74 years |
| Benjamin Harold Bourchier Wrey | Director | 28 Jul 1998 | 20 Feb 2001 | British | 86 years |
| Charlotte Caulfield | Secretary | 23 Mar 2016 | 8 Jun 2017 | - | - |
| Danielle Pass | Secretary | 1 Feb 2018 | 14 Jan 2020 | - | - |
| David Holford Benson | Director | 30 May 1992 | 20 Feb 2001 | British | 88 years |
| Denette Botchway | Secretary | 7 Oct 2014 | 29 Feb 2016 | - | - |
| Donald John Cargill | Director | 13 Dec 2006 | 9 Oct 2013 | British | 60 years |
| Emma Suzanne Ferley | Secretary | 6 Sept 2010 | 9 Feb 2012 | - | - |
| Frances Julie Niven | Secretary | 23 Jul 2004 | 18 Jul 2005 | British | - |
| Frederick William Trinder | Director | 30 May 1992 | 20 Feb 2001 | British | 96 years |
| Graham Richard Thomas | Director | 20 Feb 2001 | 31 Dec 2004 | British | 77 years |
| Hayley Ann Seldon | Director | 17 Dec 2018 | 31 Jul 2025 | British | 46 years |
| Janice Anne Robe | Secretary | 30 May 1992 | 31 Mar 1997 | British | - |
| Joe Flannery | Director | 17 Nov 2015 | 11 Jul 2019 | Irish | 47 years |
| John Dudley Webster | Director | 30 May 1992 | 22 Jan 1997 | British | 87 years |
| John Mcauslan | Director | 30 May 1992 | 15 Nov 1995 | British | 96 years |
| Jonathan Neil Sturman | Secretary | 19 May 2000 | 20 Feb 2001 | British | - |
| Julie Margaret Wilson | Secretary | 17 Feb 1998 | 17 May 2000 | British | - |
| Marget Jacqeline Connolly | Director | 20 Feb 2001 | 6 Apr 2001 | British | 65 years |
| Mark Andrew Kelly | Secretary | 22 Apr 1997 | 31 Jul 1997 | British | - |
| Mark Vivian Pearce | Secretary | 19 Dec 2002 | 23 Jul 2004 | British | - |
| Nadia Edward | Secretary | 7 Sept 2020 | 18 Feb 2022 | - | - |
| Nicholas Samuel Wilson | Director | 18 Jul 1995 | 20 Feb 2001 | British | 91 years |
| Pauline Louise Mcquillan | Secretary | 8 May 2006 | 24 Aug 2009 | British | - |
| Perry Alan Braithwaite | Director | 17 Nov 2015 | 3 May 2023 | British | 59 years |
| Peter Edward Blackburn Cawdron | Director | 22 Jul 1997 | 20 Feb 2001 | British | 83 years |
| Richard Frederick William Parker | Director | 1 Feb 2018 | 11 May 2023 | British | 59 years |
| Robert Frederick Southgate | Director | 24 Aug 2009 | 31 May 2013 | British | 75 years |
| Robert Hugh Musgrove | Secretary | 20 Feb 2001 | 19 Dec 2002 | Other | - |
| Robert James Hinton | Secretary | 9 Feb 2012 | 7 Oct 2014 | - | - |
| Rosalyn Hazel Clark | Director | 14 Dec 2006 | 21 Feb 2014 | British | 56 years |
| Sarah Caroline Gott | Secretary | 24 Aug 2009 | 9 Feb 2012 | British | - |
| Shirley Bennison | Secretary | 1 Aug 1997 | 17 Feb 1998 | British | - |
| Simon Woolnough | Director | 31 Dec 2004 | 31 Dec 2004 | British | 65 years |
| Simon Woolnough | Director | 31 Dec 2004 | 14 Dec 2006 | British | 65 years |
| Steven Andrew Robertson | Director | 18 Mar 2014 | 4 Sept 2015 | British | 64 years |
| Timothy Henry Lavis | Director | 19 Oct 1993 | 20 Feb 2001 | British | 71 years |
| Victor George Spencer | Director | 30 May 1992 | 31 Jul 1999 | British | 92 years |
| William Edward Horwood | Director | 18 Mar 2014 | 23 Mar 2016 | British | 71 years |
| William Thomas Jackson Griffin | Director | 30 May 1992 | 31 Dec 1998 | British | 98 years |