| Alan Jerry Harden | Director | 1 Jan 2004 | 29 Aug 2008 | British | 68 years |
| Alan John Trotter | Director | 1 Feb 2010 | 30 Sept 2015 | British | 58 years |
| Alan Michael Walker Young | Director | 1 Jan 1992 | 9 Sept 2006 | British | 80 years |
| Alastair Gibson Kerr | Director | 1 Oct 2012 | 1 Jan 2016 | British | 76 years |
| Andrew Francis Thomson | Director | 28 Apr 1989 | 27 Apr 2001 | British | 84 years |
| Anthony Leonard Brooke | Director | 24 Jun 2015 | 27 Apr 2023 | British | 80 years |
| Bruce William Mclaren Johnston | Director | 16 Aug 1991 | 30 Apr 2004 | British | 87 years |
| Carol Consuelo Brooke | Director | 25 Nov 2011 | 29 Aug 2012 | British | 79 years |
| Christopher Blake | Director | 28 Apr 1989 | 14 Oct 1994 | British | 100 years |
| Christopher John Loraine Samuel | Director | 23 Sept 2015 | 21 Apr 2022 | British | 68 years |
| Christopher Masters | Director | 15 Nov 2002 | 31 Dec 2012 | British | 79 years |
| Clare Juliet Dobie | Director | 26 May 2016 | 1 May 2025 | British | 69 years |
| Clare Leslie Salmon | Director | 17 Jun 2005 | 17 Aug 2005 | British | 63 years |
| Clare Leslie Sheikh | Director | 14 Sept 2005 | 20 May 2011 | British | 63 years |
| David Alun Deards | Director | 1 Jan 2003 | 30 Apr 2009 | British | 66 years |
| Donald James Mcpherson | Secretary | 10 Jul 2006 | 31 May 2016 | British | - |
| Douglas Fleming Hardie | Director | 28 Apr 1989 | 15 Oct 1993 | British | 103 years |
| Gavin Robert Suggett | Director | N/A | 31 Dec 2003 | British | 82 years |
| Gavin Robert Suggett | Secretary | N/A | 1 Dec 1989 | British | - |
| Gregor Ninian Stewart | Director | 1 Dec 2014 | 31 Dec 2023 | British | 62 years |
| Hugh Westrope Bolland | Director | 1 Jul 2007 | 27 Apr 2012 | British | 80 years |
| Ian Lester Goddard | Secretary | 29 Nov 2000 | 31 May 2006 | British | - |
| Janet Edna Pope | Director | 20 Nov 2006 | 5 Mar 2008 | British | 66 years |
| John Francis Hylands | Director | 22 Feb 2008 | 6 May 2016 | British | 75 years |
| John Scott Perry | Director | 10 Oct 2024 | 1 May 2025 | British | 72 years |
| Karin Birgitta Forseke | Director | 1 Mar 2012 | 1 Jan 2016 | American/swedish | 71 years |
| Karl Stephen Sternberg | Director | 23 Sept 2015 | 30 Jun 2021 | British | 57 years |
| Katherine Lucy Garrett-cox | Director | 1 May 2007 | 3 Feb 2016 | British | 59 years |
| Lesley Mary Samuel Knox | Director | 15 Jun 2001 | 2 Apr 2012 | British | 73 years |
| Lisa Brown | Secretary | 1 Jun 2016 | 30 Dec 2022 | - | - |
| Lyndon Bolton | Director | 28 Apr 1989 | 30 Apr 1995 | British | 89 years |
| Robert Courtney Smith | Director | 28 Apr 1989 | 19 Apr 1996 | British | 99 years |
| Robert Haldane Smith | Director | 3 Feb 2016 | 4 Sept 2019 | British | 82 years |
| Robert Michael Burgess | Director | 21 Sept 2009 | 9 Feb 2012 | British | 61 years |
| Rory Patrick Macnamara | Director | 24 Jun 2015 | 17 Dec 2016 | British | 71 years |
| Sheila Monica Ruckley | Director | 29 Nov 2000 | 31 Jul 2006 | British | 77 years |
| Sheila Monica Ruckley | Secretary | 1 Dec 1989 | 29 Nov 2000 | British | - |
| Susan Margaret Noble | Director | 11 Jul 2012 | 3 Feb 2016 | British | 69 years |
| Timothy Charles William Ingram | Director | 24 Sept 2010 | 27 Apr 2012 | British | 79 years |
| Victoria Katherine Hastings | Director | 29 Sept 2022 | 31 Jul 2025 | British | 60 years |
| William Berry | Director | 1 Feb 1994 | 29 Apr 2005 | British | 87 years |
| William Gordon Mcqueen | Director | 2 Jun 2004 | 31 Mar 2008 | British | 80 years |
| William Henderson Jack | Director | 29 Nov 2000 | 24 May 2007 | British | 82 years |
| William Nelson Robertson | Director | 1 Feb 1996 | 26 Apr 2002 | British | 93 years |
| Winfred Elsie Robbins | Director | 14 Feb 2013 | 19 Feb 2015 | British | 70 years |