| Adam Thomson | Director | 28 Dec 1988 | 7 Jul 1991 | British | 99 years |
| Aileen Norma Taylor | Secretary | 30 Apr 2010 | 30 Apr 2018 | - | - |
| Alan Ellis | Director | 28 Dec 1988 | 31 Mar 1989 | British | 94 years |
| Alexander Macdonald Hamilton | Director | 28 Dec 1988 | 18 Jan 1996 | British | 100 years |
| Alexander Maxwell Crombie | Director | 1 Jun 2009 | 1 Jan 2018 | British | 76 years |
| Alison Davis | Director | 1 Aug 2011 | 30 Apr 2018 | American | 64 years |
| Angus Mcfarlane Mcleod Grossart | Director | 28 Dec 1988 | 20 Apr 2005 | British | 88 years |
| Anthony Di Iorio | Director | 1 Sept 2011 | 26 Mar 2014 | American | 82 years |
| Archibald Sinclair Hunter | Director | 1 Sept 2004 | 28 Apr 2010 | British | 82 years |
| Arthur Frederick Ryan | Director | 1 Oct 2008 | 30 Sept 2013 | United States | 83 years |
| Austin William Pearce | Director | 28 Dec 1988 | 18 Dec 1991 | British | 104 years |
| Brendan Robert Nelson | Director | 1 Apr 2010 | 30 Jun 2021 | British | 76 years |
| Bruce Winfield Van Saun | Director | 1 Oct 2009 | 30 Sept 2013 | United States | 68 years |
| Cameron Mclatchie | Director | 1 Oct 1998 | 25 Apr 2002 | British | 78 years |
| Carron Greig | Director | 28 Dec 1988 | 21 Dec 1994 | British | 100 years |
| Charles Frederick Eardley Shakerley | Director | 28 Dec 1988 | 19 Dec 1990 | British | 91 years |
| Charles John Koch | Director | 29 Sept 2004 | 6 Feb 2009 | American | 79 years |
| Charles Milne Winter | Director | 28 Dec 1988 | 31 Jul 1993 | British | 92 years |
| Charles Murray Stuart | Director | 24 Jan 1996 | 25 Apr 2002 | British | 92 years |
| Christopher Alan Marks | Director | 30 Apr 2018 | 18 Dec 2019 | British | 54 years |
| Colin Alexander Mason Buchan | Director | 1 Jun 2002 | 5 Aug 2011 | British | 71 years |
| David Beatson Clark | Director | 28 Dec 1988 | 31 Dec 1988 | British | 92 years |
| David George Patrick Coke Airlie | Director | 23 Jan 1991 | 3 Jan 1993 | British | 99 years |
| David John King | Director | 1 Jul 2020 | 31 Mar 2022 | British | 57 years |
| David Robinson | Director | 28 Dec 1988 | 6 Oct 1992 | British | 93 years |
| Derek French Channon | Director | 28 Dec 1988 | 21 Dec 1994 | British | 86 years |
| Eileen Alison Mackay | Director | 16 May 1996 | 31 Dec 2005 | British | 82 years |
| Elizabeth Hawkins Nelson | Director | 28 Dec 1988 | 1 Oct 1997 | British | 94 years |
| Emilio Botin-sanz De Sautuola Y Garcia De Los Rios | Director | 23 Jan 1991 | 3 Jan 1993 | Spanish | 91 years |
| Emilio Botin-sanz De Sautuola Y Garcia De Los Rios | Director | 23 Jan 1991 | 12 Nov 2004 | Spanish | 91 years |
| Ewen James Stevenson | Director | 19 May 2014 | 30 Apr 2018 | British | 59 years |
| Franck Emmanuel Dangeard | Director | 16 May 2016 | 23 Apr 2025 | French | 67 years |
| Frederick Anderson Goodwin | Director | 1 Aug 1998 | 21 Nov 2008 | British | 67 years |
| Frederick Inglis Watt | Director | 4 Sept 2000 | 31 Jan 2006 | British | 65 years |
| Frederick Ranald Noel-paton | Director | 28 Dec 1988 | 3 Jan 1993 | British | 87 years |
| George Anthony Schofield | Director | 1 Jun 1992 | 31 Mar 1998 | British | 85 years |
| George Graboys | Director | 23 Jan 1991 | 22 Dec 1992 | British | 93 years |
| George Ross Mathewson | Director | 28 Dec 1988 | 28 Apr 2006 | British | 85 years |
| Gordon Francis Pell | Director | 6 Mar 2000 | 31 Mar 2010 | British | 75 years |
| Guy Robert Whittaker | Director | 1 Feb 2006 | 30 Sept 2009 | British | 69 years |
| Henry Edward Farley | Director | 28 Dec 1988 | 28 Sept 1990 | British | 95 years |
| Howard John Davies | Director | 14 Jul 2015 | 30 Apr 2018 | British | 74 years |
| Iain Samuel Robertson | Director | 14 Jan 1993 | 20 Apr 2005 | British | 80 years |
| Ian Clark Wood | Director | 28 Dec 1988 | 22 Oct 1997 | British | 83 years |
| Ian Faulconer Heathcoat Grant | Director | 28 Dec 1988 | 2 Dec 2000 | British | 86 years |
| James Craufuird Roger Inglis | Director | 28 Dec 1988 | 27 Dec 1989 | British | 100 years |
| James Mcgill Currie | Director | 28 Nov 2001 | 6 Feb 2009 | British | 84 years |
| James Snodgrass Lindsay | Secretary | 28 Dec 1988 | 1 Feb 1991 | British | - |
| Janis Carol Kong | Director | 1 Jan 2006 | 6 Feb 2009 | British | 74 years |
| John Alastair Nigel Cameron | Director | 1 Mar 2006 | 13 Oct 2008 | British | 71 years |
| John Alistair Barclay | Director | 1 Apr 1989 | 3 Jan 1994 | British | 92 years |
| John Edward Hughes | Director | 21 Jun 2017 | 1 Sept 2017 | British | 61 years |
| John James | Director | 28 Dec 1988 | 27 Dec 1989 | British | 90 years |
| John Mcfarlane | Director | 1 Oct 2008 | 31 Mar 2012 | British | 78 years |
| Joseph Patrick Machale | Director | 1 Sept 2004 | 14 May 2013 | British | 74 years |
| Juan Rodriguez Inciarte | Director | 25 Feb 1998 | 12 Nov 2004 | British | 73 years |
| Kennedy Campbell Foster | Secretary | 1 Feb 1991 | 15 Aug 1994 | British | - |
| Kenneth Thompson | Director | 23 Jan 1991 | 12 Jun 1993 | British | 92 years |
| Lawrence Kingsbaker Fish | Director | 14 Jan 1993 | 31 Dec 2008 | American | 81 years |
| Lena Cooper Wilson | Director | 1 Jan 2018 | 30 Apr 2018 | British | 61 years |
| Lewis Sinclair Mcgill | Director | 28 Dec 1988 | 31 Dec 1990 | British | 86 years |
| Mark Andrew Fisher | Director | 1 Mar 2006 | 21 Nov 2008 | British | 65 years |
| Mark Donald Seligman | Director | 1 Apr 2017 | 30 Apr 2018 | British | 69 years |
| Maurice Victor Blank | Director | 23 Jan 1991 | 27 Oct 1993 | British | 83 years |
| Michael John Rogers | Director | 26 Jan 2016 | 30 Apr 2018 | British | 61 years |
| Michael Young-herries | Director | 28 Dec 1988 | 30 Sept 1992 | British | 102 years |
| Miller Roy Mclean | Secretary | 15 Aug 1994 | 30 Apr 2010 | British | - |
| Morten Nicolai Friis | Director | 10 Apr 2014 | 30 Apr 2018 | Norwegian | 72 years |
| Nathan Mark Bostock | Director | 1 Oct 2013 | 28 May 2014 | British | 65 years |
| Nicholas David Britten | Director | 1 May 1996 | 17 May 1996 | British | 70 years |
| Norman Cardie Mcluskie | Director | 1 Jun 1992 | 23 Aug 2004 | British | 81 years |
| Norman Quick | Director | 28 Dec 1988 | 19 Dec 1990 | British | 103 years |
| Penelope Lesley Hughes | Director | 1 Jan 2010 | 30 Apr 2018 | British | 66 years |
| Peter Denis Sutherland | Director | 31 Jan 2001 | 6 Feb 2009 | Irish | 79 years |
| Peter Edward Gerald Balfour | Director | 28 Dec 1988 | 30 Sept 1990 | British | 104 years |
| Peter John Wood | Director | 1 Jun 1992 | 25 Jun 1997 | British | 79 years |
| Philip Gordon Scott | Director | 1 Nov 2009 | 31 Oct 2014 | British | 71 years |
| Philip Roy Hampton | Director | 19 Jan 2009 | 31 Aug 2015 | British | 72 years |
| Richard Place | Director | 30 Apr 2018 | 18 Dec 2019 | British | 60 years |
| Robert Andrew Joseph Gillespie | Director | 2 Dec 2013 | 30 Apr 2018 | British | 70 years |
| Robert Avisson Scott | Director | 31 Jan 2001 | 6 Feb 2009 | Australian | 83 years |
| Robert Begbie | Director | 18 Dec 2019 | 1 Oct 2024 | British | 64 years |
| Robert Mitchell Maiden | Director | 28 Dec 1988 | 31 Mar 1991 | British | 92 years |
| Robert Speirs | Director | 1 Jul 1993 | 23 Oct 1998 | British | 89 years |
| Robin Duthie | Director | 28 Dec 1988 | 1 Jan 1989 | British | 97 years |
| Robin Duthie | Director | 27 Dec 1989 | 16 Dec 1998 | British | 97 years |
| Ross Maxwell Mcewan | Director | 1 Oct 2013 | 30 Apr 2018 | New Zealander | 68 years |
| Sarah Fay Wilkinson | Director | 30 Apr 2018 | 26 Sept 2022 | British | 55 years |
| Scott Gibson | Secretary | 30 Apr 2018 | 4 Sept 2023 | - | - |
| Sheila Valerie Noakes | Director | 1 Aug 2011 | 30 Apr 2018 | British | 76 years |
| Stephen Alan Michael Hester | Director | 1 Oct 2008 | 30 Sept 2013 | British | 65 years |
| Stephen Arthur Robson | Director | 25 Jul 2001 | 6 Feb 2009 | British | 82 years |
| The Lord Vallance Of Tummel | Director | 14 Jan 1993 | 20 Apr 2005 | British | 82 years |
| The Rt Hon Viscount Younger Of Leckie | Corporate Director | 1 Oct 1989 | 11 Apr 2001 | - | - |
| Thomas Fulton Wilson Mckillop | Director | 1 Sept 2005 | 3 Feb 2009 | British | 82 years |
| Vivek Gopaldas Ahuja | Director | 30 Apr 2018 | 17 Jan 2025 | Singaporean | 59 years |
| William Michael Friedrich | Director | 1 Mar 2006 | 6 Feb 2009 | American | 76 years |
| William Moore Wilson | Director | 26 May 1993 | 25 Dec 2003 | British | 88 years |
| Yasmin Jetha | Director | 21 Jun 2017 | 30 Apr 2018 | British | 73 years |