| Alan Nash | Director | 1 Aug 1997 | 7 Dec 2000 | British | 77 years |
| Alexander Park Leitch | Director | 27 Apr 2010 | 25 Jan 2012 | British | 78 years |
| Andrew Hedley Hornby | Director | 26 Mar 2001 | 6 Feb 2002 | British | 58 years |
| Andrew Michael Peck | Director | 24 Jan 2008 | 25 Jan 2012 | British | 76 years |
| Andrew Nicholas Davis | Director | 30 Dec 2012 | 11 Oct 2013 | British | 60 years |
| Anthony Jonathan Reizenstein | Director | 1 Dec 2023 | 30 Jun 2024 | British | 69 years |
| Archibald Gerard Kane | Director | 4 Mar 2009 | 19 May 2011 | British | 73 years |
| Arthur Selman | Director | 26 Mar 2001 | 6 Feb 2002 | British | 79 years |
| Brian James Duffin | Director | 24 Jan 2008 | 18 Mar 2010 | British | 70 years |
| Catriona Margaret Herd | Secretary | 25 Mar 2010 | 4 May 2012 | British | - |
| Catriona Margaret Herd | Director | 6 Jun 2017 | 26 Jan 2023 | British | 60 years |
| Christina Ann Hankin | Secretary | 17 Sept 2018 | 31 Dec 2019 | - | - |
| Christopher Paul Headdon | Director | 16 Jan 2001 | 26 Mar 2001 | British | 69 years |
| Craig James Thornton | Director | 10 Dec 2021 | 1 Mar 2024 | British | 53 years |
| David Anthony Beaumont | Secretary | 31 Dec 2019 | 27 Oct 2021 | - | - |
| David Clarke | Secretary | 29 Jan 2015 | 17 Sept 2018 | - | - |
| David George Thomas | Director | 9 May 1992 | 1 Mar 2001 | British | 81 years |
| Deborah Lee Davis | Director | 18 Mar 2022 | 18 Mar 2025 | British | 62 years |
| Donald James Mcpherson | Secretary | 1 Mar 2001 | 16 Nov 2001 | British | - |
| Duncan George Robin Ferguson | Director | 23 Oct 2003 | 31 Dec 2007 | British | 83 years |
| Emma Jayne Watkins | Director | 1 Mar 2024 | 1 May 2025 | British | 52 years |
| Gavin Macneill Stewart | Director | 9 Dec 2013 | 31 Dec 2019 | British | 66 years |
| Gavin Macneill Stewart | Director | 13 Jan 2020 | 14 Jan 2021 | British | 66 years |
| Gregor Ninian Stewart | Director | 15 Dec 2011 | 5 Oct 2012 | British | 61 years |
| Hugh Hedley Scurfield | Director | 26 Mar 2001 | 6 Feb 2002 | British | 90 years |
| James Christopher Steuart Hillman | Director | 19 Aug 2019 | 31 Aug 2023 | British | 56 years |
| James Edward Clatworthy | Director | 27 Dec 2013 | 29 Feb 2016 | British | 58 years |
| James Masson Black | Director | 8 May 2014 | 31 Aug 2018 | British | 61 years |
| Jeffrey Edward Sayers | Director | 9 Dec 2019 | 31 Dec 2020 | British | 55 years |
| Jeremy Goford | Director | 27 Apr 2010 | 25 Jan 2012 | British | 80 years |
| Joanne Dawson | Director | 1 Mar 2006 | 23 Mar 2009 | British | 63 years |
| Joanne Dawson | Director | 28 Feb 2002 | 23 Oct 2003 | British | 63 years |
| John Martin Weller | Director | 1 Aug 1997 | 26 Mar 2001 | British | 81 years |
| John Michael Butler | Secretary | 1 Mar 2003 | 29 Sept 2003 | British | - |
| John Neil Maclean | Director | 23 Oct 2003 | 24 Mar 2005 | British | 81 years |
| John Patrick Hiew | Director | 23 Oct 2003 | 28 Sept 2005 | British | 61 years |
| John Spellman | Director | 10 Nov 2005 | 8 Sept 2006 | British | 59 years |
| John Stephen Edwards | Director | 23 Oct 2003 | 1 Mar 2006 | British | 70 years |
| John Van Der Wielen | Director | 4 Mar 2009 | 25 Mar 2010 | Australian | 59 years |
| Jonathon Roderick Alan Bond | Director | 1 Sept 2019 | 14 May 2021 | British | 62 years |
| Julian Andrew Hirst | Director | 19 Feb 1999 | 1 Mar 2001 | British | 77 years |
| Karen Joanne Mckay | Secretary | 27 Oct 2021 | 18 May 2022 | - | - |
| Kathleen Anne Nealon | Director | 24 Mar 2005 | 31 Dec 2007 | American | 72 years |
| Keith William Abercromby | Director | 26 Mar 2001 | 17 Oct 2005 | British | 61 years |
| Kerr Luscombe | Director | 6 Apr 2010 | 25 May 2011 | British | 60 years |
| Malachy Paul Smith | Director | 14 Oct 2005 | 31 Dec 2007 | Irish | 77 years |
| Mark Wilson | Director | 17 Mar 2023 | 30 Nov 2023 | British | 55 years |
| Marlene Keil | Secretary | 11 May 2022 | 1 Mar 2025 | - | - |
| Michael Christophers | Director | 6 Oct 2005 | 25 Jan 2012 | British | 83 years |
| Michael Henry Ellis | Director | 26 Mar 2001 | 6 Feb 2002 | British | 74 years |
| Michael Rodney Newton Moore | Director | 23 Oct 2003 | 31 Dec 2007 | British | 89 years |
| Michael Ronald Downie | Director | 20 Sept 2023 | 1 Apr 2025 | British | 49 years |
| Michael Stuart Robinson | Director | 23 Oct 2003 | 28 Sept 2005 | British | 61 years |
| Neil Lindsay Nicholson Machray | Director | 14 Feb 2012 | 31 Mar 2013 | British | 56 years |
| Norval Mackenzie Bryson | Director | 27 Apr 2010 | 25 Jan 2012 | British | 76 years |
| Patrick Nigel Christopher Gale | Director | 24 Jan 2008 | 31 Dec 2009 | British | 65 years |
| Paul Gerard Mcnamara | Director | 30 Nov 2005 | 30 Jun 2007 | Irish | 59 years |
| Peter John Veale | Secretary | 29 Sept 2003 | 23 Mar 2009 | British | - |
| Peter Louis Michael Sherwood | Director | 23 Oct 2003 | 31 Dec 2004 | British | 84 years |
| Peter Wilfred Wilmot | Secretary | 1 Aug 1997 | 1 Mar 2001 | British | - |
| Phil Andrew Hodkinson | Director | 23 Oct 2003 | 28 Jul 2005 | British | 67 years |
| Philip Duncan Loney | Director | 25 Mar 2010 | 27 Sept 2011 | British | 61 years |
| Philip Robert Grant | Director | 29 Aug 2019 | 10 Nov 2022 | British | 59 years |
| Raymond John Hildreth Milne | Director | 18 Feb 2002 | 30 Jun 2007 | British | 66 years |
| Richard George Myers | Director | 7 Sept 2001 | 23 Oct 2003 | British | 68 years |
| Richard Spelman | Director | 26 Mar 2001 | 6 Feb 2002 | British | 79 years |
| Robert Alan Devey | Director | 18 Oct 2005 | 1 Jun 2006 | British | 57 years |
| Robert Alan Devey | Director | 10 Oct 2006 | 23 Mar 2009 | British | 57 years |
| Robert Keith Moorhouse | Secretary | 16 Nov 2001 | 1 Mar 2003 | British | - |
| Robert William Fletcher | Director | 24 Jan 2012 | 8 May 2014 | British | 61 years |
| Roger Quintin Bowley | Secretary | 9 May 1992 | 1 Aug 1997 | British | - |
| Ronald Frank Cameron Taylor | Director | 8 Aug 2014 | 31 Dec 2017 | British | 59 years |
| Roy Henry Ranson | Director | 9 May 1992 | 31 Jul 1997 | British | 95 years |
| Sally Mayer | Secretary | 23 Mar 2009 | 25 Mar 2010 | Other | - |
| Sean William Lowther | Director | 10 Apr 2017 | 31 Dec 2020 | British | 65 years |
| Shaun Munro Kinnis | Director | 9 May 1992 | 31 Jul 1997 | British | 88 years |
| Sophie Jane O'connor | Director | 30 Sept 2019 | 30 Sept 2023 | British | 55 years |
| Steven James Colsell | Director | 17 Aug 2006 | 23 Mar 2009 | British | 61 years |
| Tamsin Hooton | Secretary | 8 Aug 2014 | 8 Sept 2014 | - | - |
| Thomas Woolgrove | Director | 1 Jun 2006 | 30 Jun 2007 | British | 55 years |
| Toby Emil Strauss | Director | 17 Oct 2011 | 8 Aug 2014 | British | 66 years |
| Tracey Caroline Nicholls | Secretary | 4 May 2012 | 8 Aug 2014 | - | - |
| Tracey Caroline Nicholls | Secretary | 8 Sept 2014 | 29 Jan 2015 | - | - |
| Trevor Anthony Leonard | Director | 25 Nov 2005 | 5 Apr 2010 | United Kingdom | 66 years |
| William Anthony Beadle | Director | 26 Mar 2001 | 6 Feb 2002 | British | 76 years |
| William Anthony Beadle | Director | 27 Oct 2005 | 17 Aug 2006 | British | 76 years |
| William John Romaine Govett | Director | 26 Mar 2001 | 6 Feb 2002 | British | 88 years |