| Alan Wallace Fernie Mitchelson | Director | 25 Feb 1991 | 28 Apr 2000 | British | 77 years |
| Alan Wallace Fernie Mitchelson | Secretary | 16 Dec 1988 | 28 Apr 2000 | British | - |
| Alexander Brian Cooper Short | Director | 1 Jan 2007 | 26 May 2008 | British | 59 years |
| Alistair William Gray | Director | 7 Dec 1992 | 25 Nov 1999 | British | 78 years |
| Andrew Kettles | Director | 16 Dec 1988 | 16 Aug 1996 | British | 82 years |
| Anthony Leonard Hunt | Director | 18 Nov 1999 | 1 Jan 2007 | British | 80 years |
| Aristotelis Baroutsis | Director | 24 Aug 2017 | 3 Aug 2023 | Swedish | 53 years |
| Barrie Mason Jackson | Director | 18 Nov 1999 | 31 May 2005 | British | 71 years |
| Brian Gammell Ivory | Director | 16 Dec 1988 | 18 Nov 1999 | British | 77 years |
| David Darragh Maxwell Scott | Director | 16 Sept 1996 | 28 Apr 2000 | British | 82 years |
| Dominique Heriard Dubreuil | Director | 21 Aug 1997 | 25 Nov 1999 | French | 80 years |
| Donald Iain Mackay | Director | 21 Jul 1997 | 25 Nov 1999 | British | 89 years |
| Fraser Stuart Morrison | Secretary | 28 Apr 2000 | 5 Jun 2017 | British | - |
| Gemma May Robson | Secretary | 5 Jun 2017 | 23 Jul 2020 | - | - |
| Gerrard Thomas Paul O'donnell | Director | 28 Apr 2000 | 13 Feb 2012 | British | 68 years |
| Glen James Gribbon | Director | 13 Feb 2012 | 31 Mar 2016 | British | 58 years |
| Igor Pierre Boyadjian | Director | 3 Jun 2019 | 3 Aug 2023 | French | 52 years |
| James Simpson Wilson | Director | 25 Feb 1991 | 18 Nov 1999 | British | 67 years |
| Jeremy Mcdowell Chaplin | Director | 24 Aug 2017 | 20 Sept 2019 | British | 65 years |
| John Alexander Sherriff | Director | 16 Dec 1988 | 9 Mar 1993 | British | 95 years |
| John Macleod Goodwin | Director | 16 Dec 1988 | 31 Dec 1997 | British | 94 years |
| John Scott Byers | Director | 16 Dec 1988 | 27 Jul 1995 | British | 82 years |
| Kenneth William Grier | Director | 12 Oct 2001 | 28 Sept 2018 | British | 68 years |
| Martin Alexander Cooke | Director | 5 Nov 2009 | 4 Feb 2010 | British | 65 years |
| Nathaniel William Hamish Macleod | Director | 1 Oct 1995 | 25 Nov 1999 | British | 86 years |
| Richard William Farrar | Director | 18 Nov 1999 | 5 Jun 2017 | British | 68 years |
| Roland John Jarvis | Director | 4 Sept 1992 | 2 Dec 1994 | British | 94 years |
| Roland Van Bommel | Director | 12 Sept 2008 | 18 Sept 2009 | British | 75 years |
| Scott John Mccroskie | Director | 1 Feb 2011 | 3 Jun 2019 | British | 59 years |
| Trina Catherine Glen | Director | 18 Nov 1999 | 5 Nov 2009 | British | 57 years |
| Veronica Lesley Jackson | Director | 28 Oct 2009 | 1 Feb 2011 | British | 62 years |
| William James Mcgregor | Director | 16 Dec 1988 | 26 Jul 1995 | British | 76 years |