| Aidan Joseph Connolly | Director | 8 Nov 2007 | 31 Dec 2011 | British | 69 years |
| Alan Leslie Reed | Director | 23 Feb 1995 | 31 Aug 1999 | British | 85 years |
| Charles Joseph Mccole | Director | 31 Aug 1999 | 1 Feb 2002 | British | 74 years |
| David Stuart Ford | Director | 23 Feb 1995 | 31 Aug 1999 | British | 73 years |
| Debra Jayne White | Director | 1 Aug 2012 | 14 Jul 2016 | British | 64 years |
| Helen Deborah North | Director | 31 Aug 1999 | 9 Aug 2004 | British | 61 years |
| Helen Jane Mayfield | Director | 21 Jan 2004 | 25 May 2005 | British | 54 years |
| Johannes Gerardus Arnoldus Rijnierse | Director | 23 Feb 1995 | 31 Aug 1999 | Dutch | 79 years |
| John Rankine Wares | Director | 23 Feb 1995 | 31 Aug 1996 | British | 78 years |
| Laurent Arnaudo | Director | 15 Apr 2016 | 1 Nov 2019 | French | 59 years |
| Lynn Christine Mawdsley | Director | 8 Jan 2014 | 15 Apr 2016 | British | 67 years |
| Martin Brennan Woolhouse | Director | 21 Jan 2004 | 7 Jul 2006 | British | 73 years |
| Martin Brennan Woolhouse | Secretary | 31 Aug 1999 | 23 Nov 2004 | British | - |
| Neil Daniel Murray | Director | 4 Jul 2016 | 31 Aug 2016 | Irish | 51 years |
| Noel Arthur Mead | Director | 31 Aug 1999 | 21 Jan 2004 | British | 79 years |
| Noel Arthur Mead | Secretary | 23 Feb 1995 | 31 Aug 1999 | British | - |
| Philip Eric Rene Jansen | Director | 8 Nov 2007 | 1 Sept 2008 | British | 59 years |
| Philip Richard Andrew | Director | 13 Jun 2011 | 28 Mar 2013 | British | 55 years |
| Philip Richard Andrew | Director | 1 Jan 2012 | 28 Mar 2013 | British | 55 years |
| Rachel Claire Elizabeth Osborne | Director | 31 Aug 2010 | 13 Jun 2011 | British | 61 years |
| Rachel Sarah Booth | Director | 30 Sept 2004 | 6 Nov 2007 | Scottish | 60 years |
| Richard John Nixon | Director | 27 Jun 2005 | 8 Nov 2007 | British | 59 years |
| Roderick Wykeham Simpson | Director | 23 Feb 1995 | 31 Aug 1997 | British | 85 years |
| Sean Michael Haley | Director | 1 Jan 2016 | 31 Dec 2024 | British | 56 years |
| Yann Francois Daniel Coleou | Director | 1 Sept 2008 | 18 Mar 2009 | French | 64 years |