| Alan Malcolm Meikle | Director | 6 Nov 2006 | 29 Feb 2008 | British | 53 years |
| Alasdair Mackay | Director | 12 Dec 1990 | 28 Feb 1997 | British | 78 years |
| Alasdair Mackay | Director | 4 Jun 1998 | 15 Mar 2005 | British | 78 years |
| Alexander Fraser Morrison | Director | 5 Aug 1988 | 2 Apr 2001 | British | 78 years |
| Allan Monk | Director | 1 Mar 1999 | 2 Apr 2001 | British | 87 years |
| Andrew Gordon Jefferson | Director | 1 Mar 1999 | 31 May 2002 | British | 63 years |
| Andrew Gordon Lawson | Director | 1 Apr 1995 | 3 Apr 1998 | British | 69 years |
| Anthony Donnelly | Director | 1 Feb 2000 | 22 Nov 2023 | British | 62 years |
| Brenda Scott Fraser | Director | 1 Jul 1998 | 31 Jul 2003 | British | 69 years |
| Brian James Leith | Director | 1 Nov 2001 | 30 Sept 2002 | British | 80 years |
| Christopher John Sims | Director | 1 Mar 1997 | 3 Oct 1997 | British | 76 years |
| David Charles Turner | Secretary | 19 Aug 2002 | 1 Jul 2005 | Other | - |
| David George Pople | Director | 1 Mar 1997 | 19 Dec 2008 | British | 75 years |
| David Iain Logue | Director | 6 Nov 2002 | 31 Dec 2009 | British | 68 years |
| David Samuel Kennedy | Director | 1 Feb 2005 | 12 Apr 2006 | British | 68 years |
| Dominic Michael Browne | Director | 1 Aug 1992 | 28 Feb 1997 | British | 70 years |
| Dominic Michael Browne | Director | 1 Mar 1997 | 6 Sept 2002 | British | 70 years |
| Elizabeth Ann Horlock Clarke | Secretary | 1 Apr 2015 | 16 Feb 2021 | - | - |
| Frederick Simon Jones | Director | 5 Aug 1988 | 15 Nov 1988 | British | 87 years |
| Frederick Simon Jones | Director | 25 May 1992 | 1 Jul 1999 | British | 87 years |
| Geoffrey Arthur George Shepheard | Secretary | 23 Aug 2004 | 31 Mar 2015 | British | - |
| Iain Alasdair Robertson | Director | 28 Jun 2001 | 15 May 2002 | British | 77 years |
| Ian Mcardle | Director | 15 May 2003 | 24 Dec 2004 | British | 60 years |
| Jacqueline Elizabeth Fox | Secretary | 2 Apr 2001 | 17 May 2002 | British | - |
| Jacqueline Fearon | Director | 3 Apr 2001 | 29 Mar 2005 | N Irish | 58 years |
| John Alexander Dunn | Director | 1 Nov 2004 | 2 Jun 2011 | British | 59 years |
| John Alexander Hope | Director | 2 Feb 2004 | 19 Dec 2008 | British | 69 years |
| John Colin Gray | Director | 1 Mar 1990 | 28 Feb 1997 | British | 75 years |
| John Colin Gray | Director | 1 Mar 1997 | 5 May 2000 | British | 75 years |
| John Morrison | Director | 20 Mar 2000 | 14 Jun 2001 | British | 77 years |
| John Morrison | Secretary | 5 Aug 1988 | 1 Apr 1990 | British | - |
| John Morrison | Secretary | 7 May 1996 | 14 Jun 2001 | British | - |
| Jonson Cox | Director | 20 Feb 2006 | 31 Mar 2010 | British | 70 years |
| Keith Martin Howell | Director | 3 Jun 1991 | 3 Feb 2000 | British | 70 years |
| Kevin Robertson | Director | 10 Apr 1997 | 23 Jan 1998 | British | 65 years |
| Lesley Ann Wallace | Director | 15 Oct 2001 | 1 Sept 2006 | British | 56 years |
| Lesley Anne Warburton | Director | 28 Mar 2001 | 23 Apr 2001 | British | 56 years |
| Mark Christopher Pogson | Director | 14 Oct 1997 | 5 May 2000 | British | 69 years |
| Mark Robert Thomas Doughty | Director | 24 Jan 2002 | 30 Jun 2004 | British | 58 years |
| Martin Johnson Winward | Director | 1 Apr 1993 | 2 Apr 2001 | British | 75 years |
| Michael John Harris | Director | 30 Sept 1996 | 28 Feb 1997 | British | 68 years |
| Michael John Harris | Director | 1 Mar 1997 | 31 Oct 1998 | British | 68 years |
| Norman Angus Maclennan | Director | 5 Aug 1988 | 6 Feb 1998 | British | 75 years |
| Paul John Devine | Director | 1 Jan 1998 | 29 Feb 2008 | British | 63 years |
| Peter Brynes | Director | 1 Apr 1996 | 6 Apr 1998 | British | 76 years |
| Peter Byrnes | Director | 1 Apr 1996 | 6 Apr 1998 | British | 76 years |
| Peter Christopher William Hopkins | Director | 1 Jan 1995 | 31 Dec 1997 | British | 78 years |
| Peter Nigel Walford | Director | 24 Jan 2002 | 30 Jul 2004 | British | 65 years |
| Peter Russell | Director | 1 Apr 1995 | 23 Apr 2003 | British | 70 years |
| Peter Russell | Secretary | 1 Apr 1990 | 7 May 1996 | British | - |
| Richard Alistair Boucher | Director | 22 Jan 2020 | 1 Mar 2024 | British | 57 years |
| Robert David Green | Director | 23 Aug 1999 | 23 Oct 2000 | British | 71 years |
| Robert Frederick Forrest | Director | 1 Jan 1995 | 8 Jul 1999 | British | 89 years |
| Robin Patrick Lawson | Director | 18 Sept 1997 | 30 Jul 1999 | British | 80 years |
| Roderick Mark Prime | Director | 17 Mar 2008 | 30 Jun 2017 | British | 60 years |
| Ronald Edwin Pratt | Director | 30 Oct 1998 | 1 Jan 1999 | British | 77 years |
| Scott Robert James Longhurst | Director | 20 Feb 2006 | 31 Mar 2015 | British | 59 years |
| Seamus Joseph Gillen | Director | 2 Apr 2001 | 15 Oct 2002 | British | 67 years |
| Seamus Joseph Gillen | Secretary | 17 May 2002 | 19 Aug 2002 | British | - |
| Sharon Carol White | Director | 1 Feb 1999 | 16 May 2003 | British | 66 years |
| Stephen Gerard Kelly | Director | 2 Feb 2004 | 29 Feb 2008 | British | 55 years |
| Stephen John Mcbrierty | Director | 19 Dec 1997 | 14 Nov 2000 | British | 65 years |
| Stewart Bates | Director | 16 Oct 1995 | 28 Feb 1997 | British | 77 years |
| Stewart Bates | Director | 10 Apr 1997 | 30 Nov 1999 | Canadian | 77 years |
| Thomas Scott Frame Dalgleish | Director | 3 Jun 1991 | 2 Sept 1997 | British | 78 years |
| Tracey Slaven | Director | 24 Jan 2002 | 15 May 2002 | British | 59 years |
| Wayne Paul Young | Director | 1 Apr 2015 | 22 Jan 2020 | British | 50 years |
| William Daniel Macdonald | Director | 22 Sept 1988 | 6 Oct 1997 | British | 77 years |