| Alan Samuel Neville | Director | 29 Mar 2004 | 30 Mar 2007 | British | 80 years |
| Alistair William Carnegie Keddie | Director | 13 Jul 2001 | 16 Sept 2004 | British | 83 years |
| Anne Richardson Sharp | Director | 30 Jul 2007 | 2 May 2009 | British | 71 years |
| Anthony Howard Stockwell | Secretary | 5 Mar 2003 | 1 Jul 2010 | British | - |
| Bradley Paul Duncan | Secretary | 29 Jan 2015 | 12 Dec 2018 | - | - |
| Christopher Alan Stark | Director | 29 Apr 2024 | 31 Jul 2024 | British | 48 years |
| Christopher John Mottershead | Director | 1 Jul 2001 | 28 Nov 2019 | British | 71 years |
| Claire Anne Williams | Secretary | 1 Jul 2010 | 26 Sept 2014 | - | - |
| Claire Durkin | Director | 16 Sept 2004 | 15 Sept 2005 | British | 70 years |
| Colin Andrew Church | Director | 2 May 2009 | 7 Feb 2011 | British | 60 years |
| Colin Imrie | Director | 12 May 2009 | 6 Jun 2010 | British | 69 years |
| Dairmuid Mclean | Director | 13 Jul 2001 | 26 Jun 2002 | British | 68 years |
| David Alan Pritchard | Director | 13 Jul 2001 | 13 Jun 2008 | British | 80 years |
| David William Thompson | Director | 26 Nov 2010 | 5 Oct 2011 | British | 74 years |
| Dinah Alison Nichols | Director | 29 Mar 2001 | 4 Mar 2003 | British | 83 years |
| Edward Barnard Hyams | Director | 16 Jun 2005 | 14 Jul 2011 | British | 75 years |
| Gordon Arthur Ivan Waters | Director | 1 Sept 2001 | 24 Dec 2006 | British | 79 years |
| Gordon David Innes | Director | 20 May 2010 | 15 Jun 2011 | British | 55 years |
| Henry Clifford Sydney Derwent | Director | 4 Mar 2003 | 30 Jul 2007 | British | 75 years |
| Hugh Peter Mcneal | Director | 17 Aug 2009 | 20 May 2010 | British | 56 years |
| Hugh Peter Mcneal | Director | 17 Aug 2009 | 20 May 2010 | British | 56 years |
| Ian Frederick Stephenson | Director | 29 Mar 2001 | 27 Sept 2012 | English | 78 years |
| Ian Frederick Stephenson | Secretary | 29 Mar 2001 | 5 Mar 2003 | English | - |
| Ian Gerald Mcallister | Director | 29 Mar 2001 | 22 Sept 2011 | British | 83 years |
| James Francis Sayers | Director | 26 Jun 2002 | 29 Mar 2004 | British | 83 years |
| James Matheson Smith | Director | 1 Sept 2010 | 12 Jul 2018 | British | 75 years |
| James William Eykyn Maitland Hume | Director | 8 Jun 2010 | 1 Jul 2011 | British | 55 years |
| Jane Elizabeth Morgan | Director | 14 Nov 2006 | 12 May 2009 | British | 73 years |
| John Alexander Brown | Director | 13 Jul 2001 | 26 Jun 2002 | British | 76 years |
| John Garrett Speirs | Director | 13 Jul 2001 | 31 Jul 2007 | British | 89 years |
| John Walter Edmonds | Director | 13 Jul 2001 | 27 Sept 2013 | British | 82 years |
| Laura Byrne | Secretary | 11 Mar 2019 | 22 Sept 2023 | - | - |
| Lucy Jeanne Neville-rolfe | Director | 12 Mar 2008 | 14 Feb 2013 | British | 73 years |
| Matthew John Quinn | Director | 13 Jun 2008 | 22 Sept 2011 | British | 63 years |
| Michael Andrew Roberts | Director | 13 Jul 2001 | 12 Mar 2008 | British | 60 years |
| Milena Radoycheva | Secretary | 4 Dec 2023 | 31 Mar 2024 | - | - |
| Neil Bentley | Director | 18 Aug 2008 | 27 Sept 2012 | British | 58 years |
| Nicholas Timon Drakesmith | Director | 20 Jul 2020 | 25 Apr 2024 | British | 61 years |
| Olive Paula Hill | Director | 8 Jun 2007 | 11 Oct 2010 | British | 64 years |
| Paul Howard Jefferiss | Director | 16 May 2001 | 6 Aug 2024 | British | 71 years |
| Peggy Jean Cruickshank | Director | 28 Mar 2008 | 17 Aug 2009 | British | 69 years |
| Peter Graham Waller | Director | 15 Sept 2005 | 28 Mar 2008 | British | 72 years |
| Peter Julian Lehmann | Director | 13 Jul 2001 | 16 Jun 2005 | British | 82 years |
| Richard John Brook | Director | 13 Jul 2001 | 22 Sept 2011 | British | 88 years |
| Robin Shand Naysmith | Director | 26 Jun 2002 | 30 Nov 2004 | British | 69 years |
| Rosemary Jane Cecilia Boot | Director | 13 Jul 2001 | 1 Aug 2011 | British | 64 years |
| Thomas Auguste Read Delay | Director | 13 Jul 2001 | 31 Mar 2024 | British | 67 years |
| Timothy Peter Weller | Director | 19 Jun 2007 | 14 Sept 2023 | British | 63 years |
| Wilson Malone | Director | 30 Nov 2004 | 14 Nov 2006 | British | 71 years |