| Alan Ewing Mills | Secretary | 19 May 2000 | 27 Jan 2005 | British | - |
| Alan Stuart Lewis | Director | 1 May 1998 | 6 May 1999 | British | 73 years |
| Alan Wallace Mckean | Director | 19 May 2000 | 6 Apr 2001 | British | 71 years |
| Angela Mary Cunningham | Secretary | 1 Aug 2008 | 19 Jan 2011 | British | - |
| Annabel Susan Graham | Secretary | 14 Nov 2005 | 1 Sept 2006 | British | - |
| Carol Lyn Carmichael Edmunds | Director | 13 Dec 2006 | 2 Jul 2007 | South African | 55 years |
| Christopher Conor Mccann | Director | 30 Jun 1993 | 1 May 1998 | British | 78 years |
| Christopher John Gammon | Director | 15 Feb 1999 | 31 Dec 2002 | British | 66 years |
| David John Lambert | Director | 10 Jan 1997 | 31 Dec 2002 | British | 70 years |
| David Robert Shaw | Director | 15 Mar 1992 | 8 May 2000 | British | 77 years |
| David Ronald Giffin | Director | 13 Feb 2003 | 31 Oct 2007 | British | 64 years |
| Debra Lynn Barr | Director | 4 Jun 1998 | 30 Apr 2000 | British | 57 years |
| Derek Gordon Gardner | Director | 23 May 2001 | 23 May 2003 | British | 63 years |
| Douglas Grahame Hawkins | Director | 24 Nov 2004 | 16 Jul 2007 | British | 54 years |
| Duncan Buchanan Cameron | Director | 15 Feb 1999 | 31 Dec 2002 | British | 63 years |
| Eric George William Tough | Director | 19 May 2000 | 6 Apr 2001 | British | 68 years |
| Gavin Christopher Petken | Director | 28 Jul 2005 | 16 Feb 2012 | British | 54 years |
| Guy Howard Cato | Director | 2 Mar 2012 | 23 Nov 2017 | British | 54 years |
| Hew Campbell | Director | 19 May 2000 | 6 Apr 2001 | British | 63 years |
| Ian David Beattie | Director | 14 Jan 2002 | 20 Jan 2003 | British | 59 years |
| Ian Mcgillivray | Director | 13 Feb 2003 | 20 Mar 2014 | British | 60 years |
| Jonathan Raoul Hughes | Director | 1 May 1998 | 6 May 1999 | British | 60 years |
| Keith Howard Churchman | Director | 1 May 1998 | 6 May 1999 | British | 67 years |
| Lindsey Mcmurray | Director | 13 Dec 2005 | 1 Mar 2012 | British | 54 years |
| Malcolm Ian Cameron | Director | 1 May 1998 | 30 Apr 2000 | British | 84 years |
| Marcos Castro | Secretary | 1 Sept 2006 | 1 Aug 2008 | Other | - |
| Marina Louise Thomas | Secretary | 28 Jan 2005 | 18 Nov 2005 | British | - |
| Mark James Danby | Director | 3 Nov 2003 | 1 Mar 2012 | British | 57 years |
| Mark Mccracken Bailie | Director | 24 Nov 2004 | 27 Jan 2005 | British | 52 years |
| Mark Patrick Nicholls | Director | 19 May 2000 | 31 Mar 2003 | British | 76 years |
| Matthew Edward Alphage Irish | Director | 18 Sept 2014 | 23 Nov 2017 | British | 46 years |
| Michael Edward D'arcy Walton | Director | 1 May 1998 | 8 May 2000 | British | 82 years |
| Paul Denzil John Sullivan | Director | 2 Mar 2012 | 5 Mar 2014 | British | 59 years |
| Peter Menzies Smaill | Director | 26 May 1999 | 18 Feb 2000 | British | 71 years |
| Peter Wright | Director | 4 Jun 1998 | 4 May 2000 | British | 74 years |
| Rachel Elizabeth Fletcher | Secretary | 19 Jan 2011 | 27 Apr 2012 | - | - |
| Robert Dyllan Hook | Director | 5 Mar 2014 | 23 Nov 2017 | British | 55 years |
| Robin Clive Powell | Director | 21 Nov 2003 | 27 Feb 2012 | British | 60 years |
| Rory Malcolm Cullinan | Director | 13 Feb 2003 | 21 Jul 2004 | British | 66 years |
| Ruth Joanne Mcintosh | Director | 15 Feb 1999 | 8 May 2000 | British | 63 years |
| Ruth Nicholson | Secretary | 27 Oct 1997 | 19 May 2000 | British | - |
| Sally Elizabeth Lewis | Secretary | 15 Mar 1992 | 27 Oct 1997 | British | - |
| Sidney Milne Donald | Director | 15 Mar 1992 | 30 Jun 1993 | British | 83 years |
| Simon Jonathan Chrispin | Director | 6 Apr 2001 | 22 Mar 2002 | British | 63 years |
| Stephen Paul Nixon | Director | 23 Nov 2017 | 26 Apr 2019 | British | 55 years |
| William Troup | Director | 13 Feb 2003 | 20 Mar 2004 | British | 64 years |