| Alan Joseph Korn | Director | 25 Mar 1998 | 30 Nov 2003 | British | 88 years |
| Allyson Mary Teresa Ablett | Secretary | 4 May 2005 | 31 Dec 2008 | British | - |
| Andrew John Walker | Director | 5 Jan 2009 | 8 Jul 2013 | British | 75 years |
| Anne Rosalind Bateson | Secretary | 16 Feb 1998 | 25 Mar 1998 | British | - |
| Anoop Kang | Director | 7 Jan 2016 | 21 Dec 2016 | British | 52 years |
| Bethan Anne Elizabeth Melges | Director | 16 Jul 2015 | 9 Sept 2019 | British | 51 years |
| Bethan Melges | Secretary | 16 May 2015 | 9 Sept 2019 | - | - |
| David Allistair Galloway | Director | 21 May 2002 | 7 Jul 2010 | British | 81 years |
| David Neville Benson | Director | 8 Jul 2013 | 9 Oct 2015 | British | 56 years |
| David William Edmund Sterry | Director | 10 Sept 1999 | 6 Jul 2011 | British | 78 years |
| Deborah Pamela Hamilton | Secretary | 8 Jul 2013 | 22 Sept 2014 | - | - |
| Donald William Macdiarmid | Director | 1 Jun 2012 | 8 Jul 2013 | British | 65 years |
| Haydn Jonathan Mursell | Director | 8 Jul 2013 | 28 Apr 2015 | British | 55 years |
| Hugh Edward Earle Raven | Director | 8 Jul 2013 | 28 Apr 2015 | British | 55 years |
| Ian Douglas Smail | Director | 25 Mar 1998 | 19 Dec 2001 | British | 86 years |
| Ishbel Jean Stewart Macpherson | Director | 20 Apr 2010 | 8 Jul 2013 | British | 66 years |
| Jaime Foong Yi Tham | Director | 24 Sept 2021 | 6 Jan 2022 | Malaysian | 49 years |
| James Albert Harding | Director | 1 Dec 2003 | 26 Dec 2004 | British | 83 years |
| James Nigel Holmes | Director | 25 Mar 1998 | 30 Sept 1999 | British | 98 years |
| Margaret Anne Ford | Director | 20 May 2011 | 8 Jul 2013 | British | 69 years |
| Mark Antony Hazlewood | Director | 13 Mar 2012 | 8 Jul 2013 | British | 60 years |
| Matthew Armitage | Director | 28 Apr 2015 | 16 Jul 2015 | British | 54 years |
| Matthew Armitage | Secretary | 12 Dec 2014 | 16 Jul 2015 | - | - |
| Matthew Stevens | Director | 9 Dec 2009 | 13 Mar 2012 | British | 57 years |
| Michael Edward Dunn | Director | 27 Sept 2004 | 8 Jan 2010 | British | 58 years |
| Philip Higgins | Secretary | 9 Sept 2019 | 24 Sept 2021 | - | - |
| Philip Higgins | Director | 9 Sept 2019 | 24 Sept 2021 | British | 57 years |
| Philip Windover Fellowes-prynne | Director | 14 Apr 2008 | 6 Sept 2012 | British | 64 years |
| Poh Lim Lai | Director | 16 Feb 1998 | 25 Mar 1998 | British | 69 years |
| Richard David Dean | Director | 19 Dec 2001 | 7 Jul 2008 | British | 67 years |
| Robert Ernest Patrick Browne | Director | 25 Mar 1998 | 5 Aug 2005 | British | 84 years |
| Robert Ernest Patrick Browne | Secretary | 25 Mar 1998 | 4 May 2005 | British | - |
| Robert Ian Findlater | Director | 19 Dec 2001 | 7 May 2010 | British | 71 years |
| Simon David Martle | Director | 26 Oct 2018 | 31 Oct 2019 | British | 56 years |
| Simon John Howell | Secretary | 1 Jan 2009 | 8 Jul 2013 | British | - |
| Thomas Lee Foreman | Director | 21 Dec 2016 | 26 Oct 2018 | British | 50 years |
| Timothy Stuart Ross | Director | 15 Nov 2000 | 19 Dec 2001 | British | 78 years |
| Timothy Stuart Ross | Director | 21 May 2002 | 24 Jul 2012 | British | 78 years |