| Alan Tony Eckford | Director | 9 Nov 2001 | 8 Jan 2002 | British | 77 years |
| Alan Tony Eckford | Director | 8 Jan 2002 | 26 Sept 2003 | British | 77 years |
| Alasdair Mackay | Director | 1 Jul 1989 | 28 Feb 1997 | British | 77 years |
| Alasdair Mackay | Director | 21 Mar 2002 | 4 Mar 2004 | British | 77 years |
| Alastair Douglas Mcdougall | Director | 5 Aug 1988 | 21 Feb 1997 | British | 81 years |
| Alexander Fraser Morrison | Director | 5 Aug 1988 | 2 Apr 2001 | British | 77 years |
| Alistair Melville Barn | Director | 5 Aug 1988 | 28 Feb 1997 | British | 77 years |
| Andrew Charles Aldred | Director | 1 Apr 1993 | 28 Feb 1997 | British | 83 years |
| Anthony Charles Salt | Director | 1 Apr 1993 | 23 Mar 1994 | British | 75 years |
| Anthony Francis Williams | Director | 1 Apr 1993 | 28 Feb 1997 | British | 76 years |
| Brian Frank Cousins | Director | 3 Jun 1991 | 2 Mar 1992 | British | 78 years |
| Brian James Leith | Director | 2 Sept 1996 | 30 Jun 2000 | British | 79 years |
| Brian Taylor | Director | 1 Apr 1993 | 24 Mar 1994 | British | 81 years |
| Charles Baird Morrison | Director | 1 Apr 1996 | 28 Feb 1997 | British | 74 years |
| Charles Baird Morrison | Director | 13 Dec 1999 | 4 Jul 2005 | British | 74 years |
| Christopher David Scoffield | Director | 1 Nov 2017 | 30 Jun 2019 | British | 43 years |
| Colin Crumlin | Director | 1 Jul 2006 | 5 Aug 2010 | British | 75 years |
| David Charles Turner | Secretary | 19 Aug 2002 | 24 Feb 2006 | Other | - |
| David Downie | Director | 31 Oct 2005 | 1 Jul 2006 | British | 79 years |
| David George Pople | Director | 6 Dec 1993 | 28 Feb 1997 | British | 74 years |
| David Iain Logue | Director | 30 Jun 2000 | 4 Mar 2004 | British | 67 years |
| David Iain Logue | Director | 4 Mar 2004 | 8 Aug 2005 | British | 67 years |
| David John Jeffs | Director | 4 Jul 1991 | 11 Oct 2005 | British | 76 years |
| David John Mccracken | Director | 4 Mar 2004 | 4 Aug 2004 | British | 68 years |
| David Leslie Bull | Director | 1 Apr 1995 | 28 Feb 1997 | British | 81 years |
| David Leslie Bull | Director | 30 Jun 2000 | 31 Dec 2001 | British | 81 years |
| David Rolfe Tydeman | Director | 13 Oct 2004 | 31 Mar 2006 | British | 70 years |
| Dean Marlow Ashton | Director | 1 Jul 2006 | 30 Oct 2015 | British | 65 years |
| Donald Maclennan | Director | 5 Aug 1988 | 28 Feb 1997 | British | 87 years |
| Duncan Elliott | Director | 2 Apr 2018 | 31 Mar 2021 | British | 57 years |
| Frederick Simon Jones | Director | 5 Aug 1988 | 31 Dec 1999 | British | 86 years |
| Gary Donald Young | Director | 22 Oct 2008 | 31 Dec 2017 | British | 64 years |
| Geoffrey Arthur George Shepheard | Secretary | 23 Aug 2004 | 31 Mar 2006 | British | - |
| Geoffrey Arthur George Shepheard | Secretary | 23 Aug 2004 | 31 Mar 2006 | British | - |
| Gordon Morrison | Director | 5 Aug 1988 | 29 May 2001 | British | 74 years |
| Graham Stanley Gould | Director | 5 Aug 1988 | 28 Feb 1997 | British | 82 years |
| Gunnar Bjerland | Director | 1 Jan 1993 | 28 Feb 1997 | British | 78 years |
| Henry Hunter Sinclair | Director | 16 Mar 1992 | 28 Feb 1997 | British | 81 years |
| Iain Alasdair Robertson | Director | 29 Nov 2000 | 21 Mar 2002 | British | 76 years |
| Ian George Smith | Director | 1 May 1992 | 28 Feb 1997 | British | 83 years |
| Ian George Smith | Director | 30 Jun 2000 | 6 May 2005 | British | 83 years |
| Ian John Jones | Director | 23 Nov 2010 | 30 Jun 2021 | British | 65 years |
| Ian Robert Mackie | Director | 22 Sept 1988 | 28 Feb 1997 | British | 87 years |
| Jacqueline Elizabeth Fox | Secretary | 2 Apr 2001 | 17 May 2002 | British | - |
| James Steele | Director | 10 Oct 2012 | 31 Aug 2019 | British | 63 years |
| John Colin Gray | Director | 3 Jun 1991 | 28 Feb 1997 | British | 74 years |
| John David Bevan | Director | 1 Aug 1996 | 28 Feb 1997 | British | 70 years |
| John David Bevan | Director | 2 Mar 2001 | 1 Jul 2015 | British | 70 years |
| John Findlay Mcfadzean | Director | 12 Feb 1996 | 28 Feb 1997 | British | 77 years |
| John Findlay Mcfadzean | Director | 30 Jun 2000 | 19 Apr 2002 | British | 77 years |
| John Morrison | Director | 2 Dec 1996 | 14 Jun 2001 | British | 76 years |
| John Morrison | Secretary | 5 Aug 1988 | 14 Jun 2001 | British | - |
| Joseph Michael Martin | Director | 3 Jun 1991 | 13 Oct 2004 | British | 73 years |
| Keith Martin Howell | Director | 3 Jun 1991 | 3 Feb 2000 | British | 69 years |
| Kenneth Gillespie | Director | 30 Jun 2000 | 31 Mar 2006 | British | 60 years |
| Kenneth Gillespie | Director | 31 Mar 2006 | 31 Jul 2016 | British | 60 years |
| Kenneth Tallant | Director | 1 Apr 1993 | 28 Feb 1997 | British | 77 years |
| Kenneth Tallant | Director | 30 Jun 2000 | 4 Jan 2002 | British | 77 years |
| Kenneth Tallant | Director | 1 May 2007 | 1 Jul 2016 | British | 77 years |
| Malcolm Geoffrey Capstick | Director | 10 Oct 2012 | 1 May 2020 | British | 68 years |
| Martin Cooper | Director | 30 Jun 2017 | 30 Jun 2019 | British | 54 years |
| Martin Johnson Winward | Director | 25 Mar 1997 | 10 Apr 1997 | British | 74 years |
| Martin Johnson Winward | Director | 23 Jan 1998 | 30 Jun 2000 | British | 74 years |
| Michael Keith | Director | 30 Jun 2000 | 1 Jul 2006 | British | 66 years |
| Michael Robert Le Lorrain | Director | 5 Nov 2003 | 30 Jun 2017 | British | 69 years |
| Neil David Cocker | Director | 30 Jun 2019 | 1 Apr 2025 | British | 59 years |
| Nicholas James Salt | Director | 1 Jul 2016 | 31 Jul 2019 | British | 55 years |
| Nicholas John Cleary | Director | 18 Dec 2014 | 14 May 2016 | British | 55 years |
| Norman Angus Maclennan | Director | 5 Aug 1988 | 6 Feb 1998 | British | 74 years |
| Patrick Iain Keith | Director | 5 Aug 1988 | 28 Feb 1997 | British | 81 years |
| Peter Anthony Heathershaw | Director | 1 Apr 1993 | 28 Feb 1997 | British | 73 years |
| Peter Brynes | Director | 1 Apr 1996 | 28 Feb 1997 | British | 75 years |
| Peter Ross Horseburgh | Director | 8 Feb 1993 | 28 Feb 1997 | British | 78 years |
| Peter Russell | Director | 25 Mar 1997 | 10 Apr 1997 | British | 69 years |
| Peter William Jeffery | Director | 1 May 1996 | 28 Feb 1997 | British | 76 years |
| Philip Barr | Director | 23 Jan 1998 | 7 Jan 2000 | British | 70 years |
| Richard Barraclough | Secretary | 31 Mar 2006 | 29 Feb 2012 | British | - |
| Richard Dean | Director | 1 Apr 1996 | 28 Feb 1997 | British | 66 years |
| Richard Hugh England | Director | 5 Aug 1988 | 28 Feb 1997 | British | 82 years |
| Richard Michael Plant | Director | 1 Jul 2016 | 4 Jan 2020 | British | 60 years |
| Robert David Green | Director | 23 Aug 1999 | 23 Oct 2000 | British | 70 years |
| Robert Frederick Forrest | Director | 3 Jun 1991 | 31 Dec 1992 | British | 88 years |
| Robert James Gibbon | Director | 1 Jul 2016 | 31 Mar 2018 | British | 62 years |
| Robert James O'dell | Director | 14 Mar 1994 | 28 Feb 1997 | British | 82 years |
| Robert James O'dell | Director | 20 Jun 2002 | 31 Dec 2008 | British | 82 years |
| Robert John Vickers | Director | 2 Mar 2001 | 1 Jul 2006 | British | 69 years |
| Robert Thomson | Director | 16 Apr 1990 | 31 Oct 1992 | British | 91 years |
| Robin Patrick Lawson | Director | 29 Aug 1997 | 22 Jun 2000 | British | 79 years |
| Roderick Antony Holdsworth | Director | 13 Oct 2004 | 31 Mar 2006 | British | 59 years |
| Roger Archibald Croson | Director | 5 Aug 1988 | 23 Jul 1998 | British | 83 years |
| Ronald James Mcgraw | Director | 5 Aug 1988 | 31 Jan 1996 | British | 86 years |
| Seamus Joseph Gillen | Director | 2 Apr 2001 | 15 Oct 2002 | British | 66 years |
| Seamus Joseph Gillen | Secretary | 17 May 2002 | 19 Aug 2002 | British | - |
| Stephen James Slessor | Director | 1 Apr 2021 | 10 Oct 2023 | British | 49 years |
| Stephen John Mcbrierty | Director | 9 Sept 1997 | 14 Nov 2000 | British | 64 years |
| Stephen Ronald Burrows | Director | 1 Aug 1994 | 28 Feb 1997 | British | 82 years |
| Stephen Walsh | Director | 31 Dec 2001 | 9 Oct 2012 | British | 71 years |
| Stewart Bonnette | Director | 28 Jul 1998 | 10 Dec 1999 | British | 68 years |
| Stewart Neil Macleod | Director | 5 Aug 1988 | 28 Feb 1997 | British | 87 years |
| Terence Charles Gilbert Mizzi | Director | 1 Apr 1996 | 28 Feb 1997 | British | 76 years |
| Thomas Scott Frame Dalgleish | Director | 5 Aug 1988 | 28 Feb 1997 | British | 77 years |
| Timothy John Pettifor | Director | 21 Sept 2001 | 9 Nov 2001 | British | 72 years |
| Tom De La Motte | Director | 18 Dec 2014 | 30 Sept 2017 | British | 55 years |
| Trevor Ernest Doolan | Director | 1 Apr 1996 | 28 Feb 1997 | British | 91 years |
| William Daniel Macdonald | Director | 3 Jun 1991 | 6 Oct 1997 | British | 76 years |
| William Raymond Fraser | Director | 5 Aug 1988 | 8 Dec 1992 | British | 78 years |