| Alan David Yuille | Secretary | 8 Feb 2013 | 15 Nov 2018 | - | - |
| Alasdair Bruce Lenman | Director | 3 Jan 2006 | 31 Mar 2010 | British | 56 years |
| Andrew David Briggs | Director | 20 Apr 2010 | 20 May 2011 | British | 59 years |
| Andrew Mark Parsons | Director | 9 Nov 2012 | 17 Mar 2015 | British | 60 years |
| Andrew Sheriff | Director | 31 Jul 1997 | 1 May 1998 | British | 70 years |
| Archibald Gerard Kane | Director | 2 Feb 2010 | 20 May 2011 | British | 73 years |
| Christopher Anthony Ham | Director | 22 Feb 2005 | 30 Apr 2010 | British | 69 years |
| Colin John Sampson | Director | 23 Mar 1992 | 28 Feb 1997 | British | 80 years |
| Craig James Thornton | Director | 11 Jun 2013 | 15 Feb 2024 | British | 53 years |
| David Antony John Stoddard | Director | 18 May 2007 | 30 Jun 2010 | British | 52 years |
| Dennis Holt | Director | 1 May 1998 | 7 Feb 2000 | British | 77 years |
| George Andrew Inglis Baty | Director | 23 Mar 1992 | 28 Jun 1993 | British | 79 years |
| Graeme John Donaldson | Secretary | 6 Oct 2022 | 29 Jul 2024 | - | - |
| Graham Winston Fillery | Director | 7 Feb 2000 | 7 Feb 2003 | British | 62 years |
| Gregor Ninian Stewart | Director | 28 Feb 2012 | 5 Oct 2012 | British | 61 years |
| Ian Charles Robert Stuart | Director | 16 Mar 2011 | 31 Dec 2011 | Irish | 77 years |
| Jacqueline Leiper | Director | 9 Feb 2015 | 14 Mar 2019 | British | 53 years |
| James Christopher Steuart Hillman | Director | 20 Jul 2018 | 3 Dec 2019 | British | 56 years |
| Janet Anne Green | Director | 7 Feb 2003 | 31 Dec 2005 | British | 71 years |
| Jayne Michelle Meacham | Secretary | 31 Mar 2010 | 2 Feb 2011 | - | - |
| John Mark Phythian | Director | 27 Nov 2020 | 23 Sept 2022 | British | 45 years |
| Jonathan Charles Pain | Director | 7 Feb 2000 | 30 Apr 2003 | British | 68 years |
| Karen Joanne Mckay | Secretary | 24 Mar 2022 | 6 Oct 2022 | - | - |
| Keith George Gibbs | Director | 7 Feb 2000 | 16 Jun 2000 | British | 67 years |
| Kevin Philip Cracknell | Director | 24 Oct 2011 | 31 Jul 2012 | British | 60 years |
| Lindsay Karen Forster | Director | 15 May 2009 | 31 Dec 2011 | British | 51 years |
| Martin Edward Cox | Director | 23 Mar 1992 | 31 Jul 1997 | British | 85 years |
| Martin Kenneth Staples | Director | 14 Mar 2019 | 31 Dec 2022 | British | 52 years |
| Martyn Paul Green | Director | 24 Nov 2005 | 15 May 2009 | British | 56 years |
| Michael Canniffe | Director | 9 Nov 2007 | 31 Dec 2011 | British | 62 years |
| Michael Christophers | Director | 24 Jan 2011 | 31 Dec 2011 | British | 83 years |
| Michael Frederick Mitchell | Director | 16 Jun 2000 | 31 Dec 2003 | British | 72 years |
| Natalie Clarice Gracey | Secretary | 23 Nov 2018 | 24 Mar 2022 | - | - |
| Neal Leonard Jones | Director | 14 Oct 2002 | 12 Sept 2003 | British | 64 years |
| Neil Edward Galjaard | Director | 1 Mar 2004 | 21 Apr 2007 | British | 59 years |
| Paul John Sparks | Director | 23 Mar 1992 | 28 Jun 1993 | British | 80 years |
| Paula Watts | Secretary | 20 May 2011 | 14 Jul 2011 | - | - |
| Peter John Hubbard | Director | 1 May 1998 | 7 Feb 2000 | British | 70 years |
| Philip Duncan Loney | Director | 1 Sept 2003 | 31 Mar 2010 | British | 61 years |
| Raymond Gordon Tasker | Director | 28 Feb 1997 | 31 Jan 2005 | British | 73 years |
| Raymond Gordon Tasker | Secretary | 23 Mar 1992 | 1 Jun 1998 | British | - |
| Richard Labassee Beaven | Director | 2 Feb 2011 | 25 Sept 2014 | English | 64 years |
| Robert James Mackenzie Bulloch | Director | 20 May 2011 | 31 Dec 2012 | British | 64 years |
| Rosemary Harris | Director | 20 May 2011 | 29 Feb 2012 | British | 67 years |
| Rudi Annie Maurice Van Delm | Director | 15 May 2009 | 14 Oct 2011 | Belgian | 61 years |
| Sally Ann Jones-evans | Director | 16 Jun 2000 | 31 Aug 2002 | British | 59 years |
| Sally Mayer | Secretary | 15 May 2009 | 31 Mar 2010 | Other | - |
| Sally Mayer | Secretary | 2 Feb 2011 | 20 May 2011 | - | - |
| Sally Mayer | Secretary | 14 Jul 2011 | 8 Feb 2013 | - | - |
| Sean Carl Quinn | Director | 9 Dec 2019 | 3 May 2023 | British | 52 years |
| Sharon Noelle Slattery | Secretary | 1 Jun 1998 | 15 May 2009 | Irish | - |
| Simon James Hargreaves | Director | 7 Jun 2004 | 7 Dec 2007 | British | 59 years |
| Simon Peter Furnell | Director | 24 Nov 2005 | 16 Mar 2007 | British | 66 years |
| Stephen Andrew Maran | Director | 23 Mar 1992 | 1 May 1998 | British | 85 years |
| Stephen James Hughes | Director | 2 Oct 2008 | 11 Oct 2011 | British | 53 years |
| Thomas David Shewry | Director | 23 Sept 2014 | 20 Dec 2017 | British | 51 years |
| Toby Emil Strauss | Director | 8 Feb 2013 | 1 Jul 2013 | British | 66 years |
| Victoria Flenk | Director | 3 May 2023 | 7 Jun 2024 | British | 41 years |