| Alexander Stewart Mcintyre | Director | 18 Oct 2017 | 18 Dec 2020 | British | 70 years |
| Anne Rosalind Bateson | Nominee Secretary | 27 Oct 1997 | 9 Dec 1997 | British | - |
| Bernard Anthony Dempsey | Director | 25 Apr 2001 | 1 Sept 2011 | British | 77 years |
| Brigitta Hilda Michaela Harrer | Director | 25 Apr 2001 | 15 Oct 2004 | German | 64 years |
| Brigitta Hilda Michaela Harrer | Secretary | 1 Jan 2000 | 25 Apr 2001 | German | - |
| Callum Mitchell Tuckett | Director | 23 Mar 2012 | 27 May 2015 | British | 52 years |
| Christopher James Read | Director | 25 Apr 2001 | 15 Oct 2004 | British | 58 years |
| Clive William Price Mckenzie | Secretary | 25 Apr 2001 | 28 May 2010 | British | - |
| David Anthony Shillito | Director | 25 Apr 2001 | 2 May 2006 | British | 70 years |
| David George Unsworth | Director | 28 Jun 2002 | 23 Mar 2012 | British | 78 years |
| Dennis Arthur Johnson | Director | 2 Feb 2004 | 23 Jul 2007 | British | 78 years |
| Gary Charles Williams | Director | 25 Apr 2001 | 24 Oct 2003 | British | 58 years |
| Hugh Waters | Director | 2 May 2006 | 1 Jun 2009 | British | 74 years |
| Iain Donald Ferguson | Director | 23 Jul 2007 | 22 Mar 2010 | British | 71 years |
| Martin Andrew Spencer Simons | Director | 25 Apr 2001 | 2 May 2006 | British | 70 years |
| Matthew Clement Hugh Gill | Director | 1 Jul 2016 | 30 Sept 2019 | British | 55 years |
| Noel Alan Gaskin | Director | 20 Dec 2019 | 4 Dec 2020 | Irish | 58 years |
| Paul Cornelius Collins | Director | 22 Mar 2010 | 7 Aug 2014 | Irish | 67 years |
| Philip Michael Wainwright | Director | 2 May 2006 | 9 Mar 2007 | British | 61 years |
| Poh Lim Lai | Nominee Director | 27 Oct 1997 | 9 Dec 1997 | British | 69 years |
| Rowan Clare Baker | Director | 18 Dec 2020 | 27 Sept 2024 | British | 53 years |
| Rudolph Hauck | Director | 9 Dec 1997 | 25 Apr 2001 | German | 68 years |
| Simon Terence Chatwin | Director | 28 Aug 2014 | 17 Jan 2019 | British | 46 years |
| Steve Coleby | Director | 27 May 2015 | 30 Jun 2017 | British | 53 years |
| Stuart Robert Purves | Director | 27 May 2015 | 1 Jul 2016 | British | 45 years |
| Teresa Ann Styant | Secretary | 28 May 2010 | 29 Jun 2016 | - | - |
| Thomas Dormer | Director | 9 Dec 1997 | 21 Dec 2001 | British | 73 years |
| Thomas Dormer | Secretary | 9 Dec 1997 | 31 Dec 1999 | British | - |