| Andrew John Eastwood | Director | 9 Jul 2009 | 30 Nov 2012 | British | 68 years |
| Andrew John Schlidt Jr | Director | 3 Nov 1997 | 15 Dec 1999 | American | 84 years |
| Angus Hamilton Giles Harding | Director | 15 Jan 2018 | 31 Oct 2018 | British | 57 years |
| Brendan Patrick Mcnulty | Director | 15 Feb 2013 | 19 Mar 2015 | British | 55 years |
| Bruno Nicolas | Director | 14 Jun 1993 | 21 Oct 1994 | French | 76 years |
| Claire Louisa Lloyd | Director | 21 Feb 2018 | 31 Mar 2020 | British | 49 years |
| David Scott Braunschweiger | Director | 1 Jan 2025 | 2 Jun 2025 | American | 55 years |
| Dragomir Gregory Culav | Secretary | 14 Oct 2008 | 9 Jul 2009 | British | - |
| Eric Auzepy | Director | 9 Dec 2002 | 6 May 2006 | French | 64 years |
| Eve Miko | Secretary | 17 Jun 2021 | 9 Nov 2022 | - | - |
| George Andrew Doig | Director | 19 May 1997 | 1 Mar 2003 | Canadian | 86 years |
| George Sutherland | Director | 24 Aug 1992 | 31 Jan 1994 | British | 63 years |
| Graham Clive Young | Director | 27 Aug 2010 | 26 Jun 2015 | British | 72 years |
| Grant Albert Victor Langley | Director | 15 May 1991 | 20 Jul 1999 | British | 82 years |
| Guy Holden | Director | 17 Jul 2002 | 9 Mar 2018 | British | 63 years |
| Ian David Entwisle | Director | 12 Mar 2018 | 1 Apr 2021 | British | 62 years |
| James Aslett Maskell | Director | 15 May 1991 | 3 Nov 1997 | British | 94 years |
| James Keyes | Director | 15 May 1991 | 9 Dec 2003 | Usa | 85 years |
| James Wade | Director | 15 May 1991 | 31 May 1991 | Usa | 82 years |
| Jeffrey William Crenshaw | Director | 14 Oct 2008 | 29 Oct 2009 | American | 60 years |
| Jeffrey William Crenshaw | Director | 23 Nov 2009 | 1 Sept 2011 | American | 60 years |
| Jerome Dennis Okarma | Director | 31 Aug 1999 | 9 Jul 2009 | American | 73 years |
| Joanne Humphrey | Director | 9 Jul 2009 | 10 Mar 2011 | British | 53 years |
| Joanne Humphrey | Secretary | 9 Jul 2009 | 10 Mar 2011 | British | - |
| John Kennedy | Secretary | 15 May 1991 | 21 Aug 1992 | American | - |
| Justin Paul Lawson | Director | 1 Apr 2021 | 1 Jan 2025 | British | 49 years |
| Keith Ernest Wandell | Director | 14 Oct 2008 | 24 Apr 2009 | American | 76 years |
| Kevan Wooden | Director | 31 Mar 1998 | 6 May 2006 | British | 59 years |
| Kevan Wooden | Secretary | 31 Mar 1998 | 6 May 2006 | British | - |
| Kevin Lynn | Director | 14 Oct 2008 | 27 Feb 2009 | British | 56 years |
| Kirsten Bradbury | Director | 1 Apr 2021 | 15 Oct 2025 | British | 45 years |
| Linda Mae Hitchcock | Director | 20 Feb 2009 | 29 Oct 2009 | United States | 64 years |
| Marcus Howell Williams | Director | 31 May 2010 | 14 Aug 2019 | British | 71 years |
| Mark Ayre | Director | 6 May 2006 | 19 Mar 2015 | British | 62 years |
| Mark Graveney | Director | 22 Sept 2005 | 31 Aug 2007 | British | 69 years |
| Michael Lawson Runicles | Director | 9 Jul 2009 | 1 Jan 2013 | British | 60 years |
| Patrick Bateman | Director | 28 Apr 1999 | 31 Jul 2004 | British | 73 years |
| Paul Clifford Skertchly | Director | 27 Apr 2020 | 1 Apr 2021 | British | 63 years |
| Paul James Saville-king | Director | 29 Jan 2019 | 1 Apr 2021 | British | 56 years |
| Paul Strickland Fleming | Director | 15 May 1991 | 31 Mar 1998 | British | 86 years |
| Paul Strickland Fleming | Secretary | 21 Aug 1992 | 31 Mar 1998 | British | - |
| Richard Thomas Hayward Daly | Director | 15 May 1991 | 24 Aug 1992 | British | 71 years |
| Robert Bruce Mcdonald | Director | 14 Oct 2008 | 9 Jul 2009 | American | 65 years |
| Robert Mark Dunk | Director | 10 Dec 2004 | 14 Oct 2008 | British | 54 years |
| Robert Mark Dunk | Secretary | 6 May 2006 | 14 Oct 2008 | British | - |
| Robert Netolicka | Director | 15 May 1991 | 14 Jun 1993 | Australian | 78 years |
| Ronald Morton Williams | Director | 15 May 1991 | 22 Oct 1994 | Usa | 90 years |
| Sarah Jane Massey | Director | 30 Jul 2013 | 2 Mar 2018 | British | 52 years |
| Simon Staunton O'neill | Director | 1 Apr 2021 | 4 Nov 2024 | Irish | 45 years |
| Stephen Roell | Director | 31 May 1991 | 1 Mar 2008 | American | 76 years |
| Thomas Michael Gannon | Director | 21 Oct 1994 | 19 May 1997 | British | 84 years |
| Trevor Mervyn Foster | Director | 22 Feb 1994 | 7 Oct 1996 | Australian | 70 years |
| Wayne Harold Felton | Director | 19 May 1997 | 31 Mar 1998 | British | 64 years |
| William Douglas Keith Miller | Director | 25 Sept 2010 | 3 Apr 2015 | British | 59 years |
| William Douglas Keith Miller | Secretary | 10 Mar 2011 | 19 Mar 2015 | - | - |