| Alexander George Hogg | Director | 31 May 2000 | 7 May 2002 | British | 76 years |
| Alison Janet Talbot | Secretary | 23 Feb 1998 | 8 May 1998 | British | - |
| Alison Janet Talbot | Secretary | 14 Aug 2000 | 19 Aug 2002 | British | - |
| Allan Macleod Mckenzie | Director | 1 Oct 1996 | 21 Apr 1999 | British | 78 years |
| Andrea Margaret Blance | Director | 21 Apr 2020 | 14 Aug 2020 | British | 61 years |
| Andrew David Briggs | Director | 8 Jan 2007 | 17 May 2010 | British | 59 years |
| Andrew Nicholas Davis | Director | 30 Dec 2012 | 11 Oct 2013 | British | 60 years |
| Angus Kenneth Cameron | Director | 16 Oct 2000 | 16 Feb 2001 | British | 68 years |
| Anthony Jonathan Reizenstein | Director | 23 Apr 2021 | 30 Jun 2024 | British | 69 years |
| Antonio Lorenzo | Director | 5 Mar 2020 | 30 May 2023 | Spanish | 59 years |
| Catharine Lucy Cheetham | Director | 21 Apr 2020 | 9 Sept 2021 | British | 62 years |
| Catriona Margaret Herd | Director | 6 Jun 2017 | 29 Aug 2019 | British | 60 years |
| Charles Annand Fraser | Director | 17 Apr 1990 | 5 Apr 1994 | British | 97 years |
| Christian Roy Torkington | Director | 1 Aug 2005 | 26 Jun 2009 | British | 63 years |
| Christina Ann Hankin | Secretary | 17 Sept 2018 | 31 Dec 2019 | - | - |
| Colin Hyndmarsh Black | Director | 17 Apr 1990 | 2 May 1995 | British | 95 years |
| Craig Cameron | Director | 6 Aug 2001 | 21 Jul 2005 | British | 66 years |
| David Clarke | Secretary | 29 Jan 2015 | 17 Sept 2018 | - | - |
| David Cowan Ritchie | Director | 7 Jul 1992 | 1 Oct 1996 | British | 81 years |
| David Lindsay Sloman | Director | 24 Nov 1998 | 31 May 2000 | Australian | 60 years |
| David Scott Graham | Director | 1 Oct 1996 | 23 Apr 1998 | British | 78 years |
| David Scott Graham | Director | 31 May 2000 | 19 Nov 2002 | British | 78 years |
| Deborah Lee Davis | Director | 18 Mar 2022 | 18 Mar 2025 | British | 62 years |
| Derek Angus | Director | 24 Jan 2000 | 17 Mar 2000 | British | 64 years |
| Donald Aiken | Director | 31 May 2000 | 17 Oct 2001 | British | 70 years |
| Donald Mackechnie | Director | 5 Nov 2018 | 21 Apr 2020 | British | 52 years |
| Douglas George Johnson | Director | 24 Aug 1998 | 31 May 2000 | British | 75 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 |
| Gavin Macneill Stewart | Director | 9 Dec 2013 | 22 Aug 2019 | British | 66 years |
| Graeme Davies Dalziel | Director | 1 Oct 1996 | 1 Jun 1998 | British | 69 years |
| Hugh William Raymond | Director | 7 Jul 1992 | 4 Apr 1995 | British | 90 years |
| Hugh William Raymond | Secretary | 17 Apr 1990 | 31 May 1995 | British | - |
| Ian David Thompson | Director | 31 May 2000 | 21 Oct 2003 | British | 71 years |
| James Christopher Steuart Hillman | Director | 19 Mar 2020 | 31 Aug 2023 | British | 56 years |
| James Edward Boyd | Director | 17 Apr 1990 | 4 May 1993 | British | 97 years |
| James Edward Clatworthy | Director | 27 Dec 2013 | 29 Feb 2016 | British | 58 years |
| James Masson Black | Director | 8 May 2014 | 31 Aug 2018 | British | 61 years |
| James Mcconville | Director | 21 Jul 2005 | 13 Mar 2006 | British | 69 years |
| James Stirling | Director | N/A | 2 Apr 1996 | British | 95 years |
| Jamie Joseph Macleod | Director | 26 Jun 1997 | 12 Oct 1999 | British | 57 years |
| Jane Elizabeth Mary Curtis | Director | 21 Apr 2020 | 7 Oct 2022 | British | 65 years |
| Jennifer Helen Mcfarlane | Secretary | 8 May 1998 | 4 Sept 1998 | British | - |
| Jesujuwonlo Williams | Secretary | 29 Mar 2024 | 12 Sept 2024 | - | - |
| Joanna Kate Harris | Director | 29 Sept 2023 | 4 Jun 2025 | British | 52 years |
| Joanne Margaret Jolly | Secretary | 31 Dec 2019 | 28 Mar 2024 | - | - |
| John Elder | Director | 17 Apr 1990 | 31 Mar 1991 | British | 89 years |
| John Francis Hylands | Director | 21 Apr 2020 | 31 Mar 2021 | British | 74 years |
| Jonathan Scott Wheway | Director | 1 Aug 2022 | 31 Oct 2025 | British | 59 years |
| Jonathon Roderick Alan Bond | Director | 21 Apr 2020 | 14 May 2021 | British | 62 years |
| Kevin Gordon Sime | Director | 1 Oct 1996 | 31 May 2000 | British | 68 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 |
| Michael Ronald Downie | Director | 1 Sept 2023 | 15 Jan 2024 | British | 49 years |
| Nathan Victor Moss | Director | 4 Feb 2003 | 8 Jan 2007 | British | 70 years |
| Neil Lindsay Nicholson Machray | Director | 13 Mar 2006 | 31 Mar 2013 | British | 56 years |
| Newton Scott | Director | 1 Oct 1996 | 3 May 2002 | British | 79 years |
| Nicholas Edward Tucker Prettejohn | Director | 6 Feb 2020 | 30 Sept 2021 | British | 65 years |
| Nigel Howard Passmore | Secretary | 4 Sept 1998 | 14 Aug 2000 | British | - |
| Paul Robert Penney | Director | 28 Mar 2011 | 31 Aug 2012 | British | 65 years |
| Peter James Jordan | Director | 12 Sept 2003 | 16 Sept 2004 | British | 64 years |
| Philip Duncan Loney | Director | 17 May 2010 | 27 Sept 2011 | British | 61 years |
| Rachel Anne Messenger | Director | 29 Aug 2019 | 6 Dec 2019 | British | 43 years |
| Robert William Fletcher | Director | 24 Jul 2009 | 8 May 2014 | British | 61 years |
| Robert Wilson Gibson | Director | 31 May 2000 | 6 May 2002 | British | 70 years |
| Ronald Frank Cameron Taylor | Director | 8 Aug 2014 | 31 Dec 2017 | British | 59 years |
| Ronald James Whatford | Director | 21 Oct 2003 | 1 Aug 2005 | British | 77 years |
| Scott Cameron Guild | Director | 29 Jul 2019 | 6 Dec 2019 | British | 58 years |
| Sean William Lowther | Director | 10 Apr 2017 | 21 Apr 2020 | British | 65 years |
| Simon Peter Skinner | Director | 28 May 2002 | 29 Aug 2003 | British | 67 years |
| Sophie Jane O'connor | Director | 21 Apr 2020 | 30 Sept 2023 | British | 55 years |
| Tamsin Hooton | Secretary | 8 Aug 2014 | 8 Sept 2014 | - | - |
| Thomas Black Houston | Secretary | 1 Jun 1995 | 23 Feb 1998 | British | - |
| Thomas Douglas Raeburn Archibald | Director | 1 Oct 1996 | 21 Apr 1999 | British | 79 years |
| Toby Emil Strauss | Director | 23 Nov 2011 | 8 Aug 2014 | British | 66 years |
| Tracey Caroline Nicholls | Secretary | 8 Sept 2014 | 29 Jan 2015 | - | - |
| Tracey Caroline Nicholls | Secretary | 19 Aug 2002 | 8 Aug 2014 | British | - |
| William Hill Main | Director | 2 May 1995 | 1 Oct 1996 | British | 82 years |
| William Leslie Robb | Director | 1 Oct 1996 | 1 Jun 1998 | British | 70 years |