| Alastair Edward Miller | Director | 1 Oct 1996 | 20 Feb 2003 | British | 82 years |
| Alexandra Francis Fletcher | Secretary | 17 Aug 2000 | 4 Jun 2002 | British | - |
| Alison Janet Talbot | Secretary | 4 Jun 2002 | 21 Aug 2002 | British | - |
| Bruce Richard Macdonald | Director | 25 Aug 1998 | 6 Jul 2001 | British | 68 years |
| Catriona Margaret Herd | Secretary | 1 Oct 1996 | 8 May 1998 | British | - |
| Charles Annand Fraser | Director | 17 Apr 1990 | 5 Apr 1994 | British | 97 years |
| Charles Grant Thomson | Director | 1 Oct 1996 | 31 Dec 2000 | British | 77 years |
| Christian Roy Torkington | Director | 1 Aug 2005 | 26 Jun 2009 | British | 63 years |
| Christina Ann Hankin | Secretary | 30 May 2019 | 31 Dec 2019 | - | - |
| Colin Hyndmarsh Black | Director | 17 Apr 1990 | 2 May 1995 | British | 95 years |
| Craig Martin Murison | Director | 30 May 2019 | 18 Dec 2020 | British | 62 years |
| David Cowan Ritchie | Director | 7 Jul 1992 | 1 Oct 1996 | British | 81 years |
| David John Moore Andrew | Director | 23 Jul 2001 | 22 Nov 2006 | British | 67 years |
| Douglas George Johnson | Director | 1 Oct 1996 | 29 Jun 2001 | British | 75 years |
| Eric Edwards | Director | 15 Jun 2017 | 30 May 2019 | British | 59 years |
| Farhat Shah | Secretary | 18 Oct 2004 | 29 Jun 2005 | British | - |
| Fiona Mitchell | Secretary | 1 Jul 2009 | 7 Jun 2010 | British | - |
| Gavin John Norman Gemmell | Director | 17 Apr 1990 | 1 Oct 1996 | British | 84 years |
| Heather Jane Matthew | Secretary | 5 Feb 2015 | 19 Jun 2015 | - | - |
| Hugh William Raymond | Secretary | 17 Apr 1990 | 31 May 1995 | British | - |
| Ian David Thompson | Director | 1 Jan 2001 | 21 Oct 2003 | British | 71 years |
| Irene Margaret Paterson | Director | 1 Oct 1996 | 26 Jun 1998 | British | 74 years |
| James Edward Boyd | Director | 17 Apr 1990 | 4 May 1993 | British | 97 years |
| James Stirling | Director | N/A | 2 Apr 1996 | British | 95 years |
| Jennifer Helen Mcfarlane | Secretary | 8 May 1998 | 4 Sept 1998 | British | - |
| Jennifer Marion Maclean | Secretary | 7 Jun 2010 | 28 May 2012 | - | - |
| John Elder | Director | 17 Apr 1990 | 31 Mar 1991 | British | 89 years |
| Kay Morgan Robertson | Director | 1 Oct 1996 | 20 May 1998 | British | 63 years |
| Lawrence Mcallister Urquhart | Director | 4 May 1993 | 1 Oct 1996 | British | 90 years |
| Martin Ross Mcwhirter | Director | 20 Feb 2003 | 15 Jun 2017 | British | 68 years |
| Martin Thomas | Director | 23 Apr 2007 | 26 Jun 2009 | British | 69 years |
| Michael David Ross | Director | 1 Apr 1991 | 1 Oct 1996 | British | 79 years |
| Nigel Howard Passmore | Secretary | 4 Sept 1998 | 17 Aug 2000 | British | - |
| Ronald Frank Cameron Taylor | Director | 13 Feb 2014 | 31 Dec 2017 | British | 59 years |
| Ronald James Whatford | Director | 21 Oct 2003 | 1 Aug 2005 | British | 77 years |
| Simon David Massey | Director | 29 Jun 2009 | 13 Feb 2014 | British | 61 years |
| Simon Peter Skinner | Director | 23 Jul 2001 | 29 Aug 2003 | British | 67 years |
| Susan Walker Paton | Secretary | 29 May 2012 | 5 Feb 2015 | - | - |
| Thomas Black Houston | Secretary | 1 Jun 1995 | 1 Oct 1996 | British | - |
| Tracey Caroline Nicholls | Secretary | 21 Aug 2002 | 1 Jul 2009 | British | - |
| Vicky Marie Smithard | Secretary | 20 Jun 2015 | 30 May 2019 | - | - |