| Alexander James Williamson | Director | 31 Jan 2020 | 21 Dec 2021 | British | 41 years |
| Andrew William Longden | Director | 3 Nov 2003 | 16 Jan 2006 | British | 69 years |
| Catharina Jeanne Renee Clabots | Director | 24 Aug 2007 | 22 May 2013 | Belgian | 59 years |
| Charlotte Pantling | Director | 1 Apr 2019 | 21 Dec 2021 | British | 38 years |
| David Andrew Warrilow | Director | 5 Dec 2012 | 31 Jan 2020 | British | 57 years |
| David Nicholas Gardner | Director | 23 Aug 2013 | 1 Apr 2019 | British | 48 years |
| Frances Hinden | Director | 28 Jan 2010 | 31 Dec 2012 | British | 58 years |
| Frederic Marret | Director | 20 Aug 2001 | 21 Sept 2007 | French | 65 years |
| Gordon John West | Secretary | 18 Nov 1997 | 10 Jul 2000 | British | - |
| Guy Peter Jacobus Agnes Janssens | Director | 16 Jan 2006 | 27 Oct 2008 | Belgian | 62 years |
| Julia Mary Goodswen | Director | 16 Jan 2006 | 27 Jun 2007 | British | 66 years |
| Jyoti Eruch Munsiff | Director | 17 Nov 1997 | 17 Jan 2006 | British | 79 years |
| Karen Hean Toh | Director | 24 Sept 2007 | 30 Sept 2009 | British | 53 years |
| Kenneth Alfred Dean | Director | 6 Sept 2000 | 23 Feb 2005 | Australian | 74 years |
| Kim Hoa To Dawson | Director | 16 Jan 2006 | 1 Feb 2010 | British | 57 years |
| Lucinda Sarah Louise Pine | Director | 13 Oct 2020 | 23 Apr 2021 | British | 37 years |
| Michael Harvey Pearman | Director | 12 Jan 2017 | 21 Dec 2021 | British | 49 years |
| Nicholas Terence Grantley | Director | 15 Jun 2012 | 13 Jun 2014 | British | 63 years |
| Nigel Henry Penny | Director | 16 Sept 1999 | 20 Aug 2001 | British | 79 years |
| Patrick James Ellingsworth | Director | 11 May 2004 | 16 Jan 2006 | United States Citizen | 78 years |
| Ralph Neil Gaskell | Director | 18 Nov 1997 | 3 Nov 2003 | British | 78 years |
| Richard John Milnes | Director | 21 Oct 2003 | 5 May 2004 | British | 55 years |
| Sara Joan Elizabeth Ostrowski | Director | 10 May 2013 | 23 Dec 2016 | British | 48 years |
| Simon Alan Constant-glemas | Director | 26 Jan 2009 | 20 Jun 2012 | British | 57 years |
| Stephen Murley Garfield Hodge | Director | 9 Dec 1997 | 10 Jul 2000 | British | 84 years |
| Timothy Donald Ryan Morrison | Director | 18 Nov 1997 | 7 Sept 1999 | British | 73 years |