| Alan Cade | Secretary | 31 Jan 1990 | 31 May 1990 | British | - |
| Alick Michael Rankin | Director | 25 Jan 1995 | 24 Jun 1998 | British | 90 years |
| Andrea Gertrude Martha Montague | Director | 30 Apr 2020 | 12 Nov 2021 | British | 50 years |
| Andrew John Moss | Director | 29 Jul 2004 | 31 Dec 2010 | British | 67 years |
| Andrew Maitland Dinwiddie | Director | 1 Mar 2022 | 1 Apr 2024 | British | 41 years |
| Andrew Stephen James Ramsay | Secretary | 2 Dec 2013 | 6 Aug 2014 | - | - |
| Anthony Blake Wyand | Director | 24 Jun 1998 | 31 Jul 2003 | British | 82 years |
| Anthony Brian Cleaver | Director | 2 May 1990 | 24 Jun 1998 | British | 87 years |
| Anupam Sahay | Director | 18 May 2007 | 31 Dec 2009 | Indian | 56 years |
| Barrie Holder | Director | 2 May 1990 | 30 Nov 1995 | British | 80 years |
| David Frederick Swiffen Rogers | Director | 6 Mar 2014 | 13 Mar 2017 | British | 69 years |
| David George Patrick Coke Airlie | Director | 2 May 1990 | 23 Apr 1997 | British | 99 years |
| David Wigley Nickson | Director | 2 May 1990 | 24 Jun 1998 | British | 96 years |
| Donald Ian Cumming | Director | 29 Jan 1990 | 11 Jul 1990 | British | 73 years |
| Duncan Mcdonald | Director | 2 May 1990 | 29 Apr 1992 | British | 104 years |
| Edward Graham Jones | Director | 8 Aug 2007 | 16 Jun 2009 | British | 75 years |
| Edward Graham Jones | Secretary | 8 Aug 2007 | 22 Dec 2010 | British | - |
| Elizabeth Louise Botting | Director | 11 Jul 1994 | 24 Jun 1998 | British | 86 years |
| Frederick Ranald Noel-paton | Director | 2 May 1990 | 24 Jun 1998 | British | 87 years |
| George Norton Morris | Director | 9 Aug 1990 | 31 May 1995 | American | 95 years |
| Harry James Kember | Director | 2 May 1990 | 31 Dec 1991 | British | 96 years |
| Ian Bruce Lang Of Monkton | Director | 10 Nov 1997 | 24 Jun 1998 | British | 85 years |
| Ian Caithness Menzies | Director | 31 Jan 1990 | 31 Dec 1990 | British | 85 years |
| James Christopher Corcoran | Director | 2 May 1990 | 31 Aug 1991 | British | 99 years |
| Jason Constantine Frangoulis | Director | 2 May 1990 | 30 Apr 1991 | British | 103 years |
| Jason Michael Windsor | Director | 1 Jul 2019 | 20 May 2022 | British | 53 years |
| John Alexander Davidson Innes | Director | 29 Jan 1990 | 11 Jul 1990 | British | - |
| John Alexander Davidson Innes | Secretary | 29 Jan 1990 | 31 Jan 1990 | British | - |
| John David Ainley | Director | 1 Apr 2006 | 16 Jun 2009 | British | 69 years |
| Julian Charles Baddeley | Secretary | 5 Aug 2015 | 21 Jul 2022 | - | - |
| Karina Jane Bye | Secretary | 31 Dec 2023 | 18 Jul 2024 | - | - |
| Kate Louise Graham | Secretary | 21 Jul 2022 | 31 Dec 2023 | - | - |
| Kathryn Baily | Secretary | 6 Aug 2014 | 25 Sept 2015 | - | - |
| Keith John Hughes | Director | 15 Aug 1989 | 29 Jan 1990 | British | 63 years |
| Keith John Hughes | Secretary | 15 Aug 1989 | 29 Jan 1990 | British | - |
| Kirstine Ann Cooper | Secretary | 22 Dec 2010 | 24 Jun 2011 | - | - |
| Kirstine Ann Cooper | Director | 3 Jun 2011 | 31 Dec 2023 | British | 61 years |
| Lord Macfarlane Of Bearsden | Director | 2 May 1990 | 1 Jan 1996 | British | 99 years |
| Louise Botting | Director | 2 Mar 1992 | 11 Jul 1994 | British | 86 years |
| Lyndon Bolton | Director | 2 May 1990 | 24 Jun 1998 | British | 88 years |
| Marjory Jane Johnstone | Director | 15 Aug 1989 | 29 Jan 1990 | British | 80 years |
| Mark Steven Hodges | Director | 18 May 2007 | 2 Jun 2011 | British | 60 years |
| Michael Nicholas Biggs | Director | 31 Mar 2001 | 31 Dec 2003 | British | 73 years |
| Michael William Pemberton | Director | 1 Aug 2003 | 31 Mar 2006 | British | 79 years |
| Nicholas Proctor Goodison | Director | 2 May 1990 | 26 Apr 1995 | British | 91 years |
| Patrick Charles Regan | Director | 29 Mar 2010 | 27 Mar 2014 | British | 59 years |
| Patrick Joseph Robert Snowball | Director | 24 Apr 2001 | 8 May 2007 | British | 75 years |
| Paul Anthony Found | Director | 24 Jun 1998 | 24 Apr 2001 | British | 77 years |
| Peter Edward Middleton | Director | 2 Mar 1992 | 24 Jun 1998 | British | 91 years |
| Peter Geoffrey Ward | Director | 14 Jun 1998 | 15 Jun 2000 | English | 83 years |
| Peter James Foster | Director | 24 Jun 1998 | 31 Mar 2001 | British | 79 years |
| Philip Gordon Scott | Director | 24 Apr 2001 | 26 Jan 2010 | British | 71 years |
| Philip Johnson Twyman | Director | 12 Aug 1996 | 31 Mar 2004 | Australian | 81 years |
| Ramneet Kalsi | Secretary | 18 Jul 2024 | 13 Nov 2024 | - | - |
| Richard Andrew Whitaker | Director | 24 Jun 1998 | 8 Aug 2007 | British | 73 years |
| Richard Andrew Whitaker | Secretary | 1 Jun 1990 | 8 Aug 2007 | British | - |
| Richard John Harvey | Director | 15 Jun 2000 | 11 Jul 2007 | British | 75 years |
| Robert Avisson Scott | Director | 24 Jun 1992 | 24 Apr 2001 | Australian | 83 years |
| Robert Wilson Adam | Director | 2 May 1990 | 27 May 1993 | British | 102 years |
| Rt.hon.lord Moore / Wolvercote | Corporate Director | 2 May 1990 | 1 May 1991 | - | - |
| Russell Kenneth Tullo | Secretary | 24 Jun 2011 | 2 Dec 2013 | - | - |
| Sarah Maillet | Director | 13 Mar 2017 | 13 Dec 2018 | British | 59 years |
| Shamira Mohammed | Director | 13 Dec 2018 | 30 Apr 2020 | British | 57 years |
| Teresa Christine Copping | Director | 7 Oct 2004 | 7 Oct 2004 | British | 64 years |
| Thomas Dawson Stoddard | Director | 9 May 2014 | 30 Jun 2019 | American | 59 years |
| Thomas Roberts | Director | 31 Jan 1990 | 30 Nov 1992 | British | 95 years |
| Tidjane Cheick Thiam | Director | 1 Aug 2003 | 21 Sept 2007 | French | 63 years |
| Walter Edward Farnam | Director | 12 Aug 1991 | 24 Jun 1998 | Usa | 84 years |
| William David Mungo James Earl Of Mansfield | Director | 5 Feb 1990 | 11 Jul 1994 | British | 95 years |
| William Nelson Robertson | Director | 31 Jan 1990 | 31 Dec 1995 | British | 92 years |