| Ann Juliet Bateman Simon | Director | 8 Feb 2006 | 31 Oct 2011 | British | 73 years |
| Ann Juliet Bateman Simon | Secretary | 8 Feb 2006 | 31 Oct 2011 | British | - |
| Anthony Francis Martin | Director | 6 May 2005 | 25 Jun 2015 | British | 72 years |
| Beverley Myers | Secretary | 14 Mar 2001 | 14 Mar 2003 | British | - |
| Christian Wiesinger | Director | 15 Sept 2004 | 30 Jun 2007 | Austrian | 63 years |
| David Roy Martyr | Director | 7 Jan 2015 | 31 Mar 2018 | British | 69 years |
| Frank Matthew Sunderland Hall | Secretary | 10 Nov 2011 | 10 Aug 2015 | British | - |
| Frank Matthew Sunderland Hall | Director | 10 Nov 2011 | 25 Jun 2015 | Australian | 66 years |
| Gavin Lucius Troughton | Director | 29 Dec 2003 | 22 Mar 2005 | British | 60 years |
| Guy Jonathan Mccarthy | Nominee Director | 14 Mar 2001 | 29 Dec 2003 | British | 64 years |
| Helen Patricia Barrett Hague | Secretary | 2 Apr 2004 | 8 Feb 2006 | British | - |
| Ian Hamilton Paling | Director | 19 Feb 2008 | 11 Dec 2010 | British | 74 years |
| John Howard Gregory | Director | 17 Nov 2011 | 19 Oct 2017 | British | 78 years |
| Martin John Frost | Nominee Director | 14 Mar 2001 | 29 Feb 2008 | British | 63 years |
| Quest Management Nv | Corporate Director | 16 Feb 2010 | 10 Nov 2011 | United Kingdom | - |
| Rachel Christine Greenhalgh | Secretary | 14 Mar 2003 | 2 Apr 2004 | British | - |
| Richard P Lyman | Director | 29 Dec 2003 | 10 Nov 2011 | American | 82 years |
| Robert Martin Pettigrew | Director | 23 Feb 2004 | 10 Nov 2011 | British | 82 years |
| Stuart Paul Hendry | Director | 29 Dec 2003 | 26 Feb 2014 | British | 63 years |
| Thomas Alfred Ludwig Lackner | Director | 29 Dec 2003 | 15 Sept 2004 | Austrian | 71 years |
| Tristan Daryl Brittain-dissont | Director | 22 Mar 2005 | 29 Feb 2008 | British | 58 years |
| William Thomas Mason | Director | 29 Dec 2003 | 10 Nov 2011 | American | 75 years |
| Wolfgang Rencken | Director | 26 Feb 2014 | 19 Oct 2017 | German | 61 years |