| Alan Ewing Mills | Secretary | 15 Oct 2002 | 7 Feb 2005 | British | - |
| Alan Ewing Mills | Nominee Director | 15 Oct 2002 | 15 Oct 2002 | British | 68 years |
| Alan Wallace Mckean | Nominee Director | 15 Oct 2002 | 15 Oct 2002 | British | 71 years |
| Angela Mary Cunningham | Secretary | 1 Aug 2008 | 19 Jan 2011 | British | - |
| Annabel Susan Graham | Secretary | 18 Nov 2005 | 1 Sept 2006 | British | - |
| Carol Lyn Carmichael Edmunds | Director | 15 Mar 2007 | 2 Jul 2007 | South African | 55 years |
| Christopher John Gammon | Director | 15 Oct 2002 | 16 Dec 2002 | British | 66 years |
| David John Lambert | Director | 15 Oct 2002 | 16 Dec 2002 | British | 70 years |
| Deborah Susan Esslemont | Secretary | 15 Oct 2002 | 15 Oct 2002 | British | - |
| Derek Gordon Gardner | Director | 16 Dec 2002 | 23 May 2003 | British | 63 years |
| Guy Howard Cato | Director | 21 Mar 2014 | 23 Nov 2017 | British | 54 years |
| Helen Elizabeth Tate | Director | 16 Dec 2002 | 22 Mar 2005 | British | 62 years |
| Hew Campbell | Director | 15 Oct 2002 | 15 Oct 2002 | British | 63 years |
| Ian Mcgillivray | Director | 16 Dec 2002 | 21 Mar 2014 | British | 60 years |
| John Donald Black Workman | Director | 20 Dec 2004 | 21 Mar 2014 | British | 73 years |
| Lindsey Mcmurray | Director | 19 Jun 2007 | 9 Jun 2010 | British | 54 years |
| Marcos Castro | Secretary | 1 Sept 2006 | 1 Aug 2008 | Other | - |
| Marina Louise Thomas | Secretary | 8 Feb 2005 | 18 Nov 2005 | British | - |
| Mark James Danby | Director | 10 Jun 2010 | 6 Nov 2013 | British | 57 years |
| Rachel Elizabeth Fletcher | Secretary | 19 Jan 2011 | 27 Apr 2012 | - | - |
| Robert Dyllan Hook | Director | 21 Nov 2013 | 23 Nov 2017 | British | 55 years |
| Stephen Paul Nixon | Director | 23 Nov 2017 | 26 Apr 2019 | British | 55 years |
| Timothy John Donald Boag | Director | 22 Mar 2005 | 14 Mar 2007 | British | 61 years |