| Adrian Mark Eastwood | Director | 1 Oct 1996 | 30 Sept 2010 | British | 64 years |
| Alan David Yuille | Secretary | 19 Dec 2011 | 15 Nov 2018 | - | - |
| Alexandra Francis Fletcher | Secretary | 18 Aug 2000 | 22 Aug 2002 | British | - |
| Andrew Mark Parsons | Director | 9 Nov 2012 | 9 Dec 2016 | British | 60 years |
| Catriona Margaret Herd | Secretary | 23 Feb 1998 | 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 |
| Colin Hyndmarsh Black | Director | 17 Apr 1990 | 2 May 1995 | British | 95 years |
| Craig Clarke | Director | 31 Jul 2002 | 25 Jan 2012 | British | 65 years |
| David Antony John Stoddard | Director | 5 Nov 2010 | 31 Mar 2012 | British | 52 years |
| David Cowan Ritchie | Director | 7 Jul 1992 | 1 Oct 1996 | British | 81 years |
| David James Walkden | Director | 31 Mar 2013 | 25 Mar 2015 | British | 67 years |
| Farhat Shah | Secretary | 18 Oct 2004 | 29 Jun 2005 | British | - |
| Gavin John Norman Gemmell | Director | 17 Apr 1990 | 1 Oct 1996 | British | 84 years |
| Hugh William Raymond | Secretary | 17 Apr 1990 | 31 May 1995 | British | - |
| James Christopher Steuart Hillman | Director | 29 Jun 2015 | 31 Aug 2023 | British | 56 years |
| James Edward Boyd | Director | 17 Apr 1990 | 4 May 1993 | British | 97 years |
| James Masson Black | Director | 23 Mar 2015 | 29 Jul 2016 | British | 61 years |
| James Mcconville | Director | 1 Jan 2001 | 31 Mar 2010 | British | 69 years |
| James Stirling | Director | N/A | 2 Apr 1996 | British | 95 years |
| Jennifer Helen Mcfarlane | Secretary | 8 May 1998 | 4 Sept 1998 | British | - |
| John Elder | Director | 17 Apr 1990 | 31 Mar 1991 | British | 89 years |
| Kerr Luscombe | Director | 6 Apr 2010 | 25 May 2011 | British | 60 years |
| Lawrence Mcallister Urquhart | Director | 4 May 1993 | 1 Oct 1996 | British | 90 years |
| Michael David Ross | Director | 1 Apr 1991 | 1 Oct 1996 | British | 79 years |
| Neil Lindsay Nicholson Machray | Director | 5 Nov 2010 | 31 Mar 2013 | British | 56 years |
| Nigel Howard Passmore | Secretary | 4 Sept 1998 | 18 Aug 2000 | British | - |
| Peter Randall Henderson | Director | 1 Oct 1996 | 20 May 1998 | British | 78 years |
| Richard Andrew Jones | Director | 1 Apr 2014 | 29 Jun 2015 | British | 53 years |
| Richard John Mcintyre | Director | 9 Dec 2016 | 31 Aug 2023 | British | 59 years |
| Ronald Frank Cameron Taylor | Director | 2 Mar 2015 | 9 Dec 2016 | British | 59 years |
| Sean William Lowther | Director | 9 Dec 2016 | 31 Dec 2022 | British | 65 years |
| Simon David Massey | Director | 11 Dec 2012 | 1 Apr 2014 | British | 61 years |
| Stephen James Mcgee | Director | 25 Jan 2012 | 9 Dec 2014 | British | 52 years |
| Thomas Black Houston | Director | 1 Oct 1996 | 23 Feb 1998 | British | 75 years |
| Thomas Black Houston | Secretary | 1 Jun 1995 | 23 Feb 1998 | British | - |
| Tracey Caroline Nicholls | Secretary | 22 Aug 2002 | 19 Dec 2011 | British | - |
| William Hill Main | Director | 1 Oct 1996 | 1 Aug 2002 | Scottish | 82 years |