| Adrian Perry | Director | 24 Mar 2014 | 13 Nov 2018 | British | 67 years |
| Alexander Lindsay Davidson | Director | 28 Feb 1992 | 3 Sept 2001 | British | 80 years |
| Blanche Rosetta Sainsbury | Director | 4 Feb 2008 | 1 Feb 2012 | British | 62 years |
| Christopher Harold Rees | Director | 28 Feb 1992 | 21 May 1992 | British | 73 years |
| Christopher Harold Rees | Director | 10 Jun 1997 | 1 May 2008 | British | 73 years |
| Christopher Robert Johnstone | Director | 3 Oct 1994 | 14 Jul 1996 | British | 86 years |
| David Edward Spencer Feeney | Director | 14 Oct 2002 | 1 Feb 2012 | British | 76 years |
| Dawna Stickler | Director | 5 Jan 2004 | 11 Feb 2008 | British | 62 years |
| Duncan James Steel Currall | Director | 14 Apr 1997 | 1 Dec 2001 | British | 76 years |
| Edward Paul Glynn | Director | 28 Feb 1992 | 28 Apr 2006 | British | 78 years |
| Garry Paget Rouse | Director | 28 Feb 1992 | 31 Dec 1993 | British | 85 years |
| George Halifield Edwards | Director | 1 Mar 1996 | 9 Oct 2002 | British | 84 years |
| Hugh Jeremy Berlyn | Director | 14 Jun 1993 | 23 Feb 1996 | British | 73 years |
| Ian Grahame Park | Director | 28 Feb 1992 | 15 May 1995 | British | 91 years |
| Ifor David Pedley | Director | 10 Nov 1997 | 14 Jun 1999 | British | 62 years |
| Iowerth Jarvis Lewis | Director | 28 Feb 1992 | 3 Jan 1995 | British | 96 years |
| James Ronald Scott | Director | 1 Sept 1993 | 5 Nov 1997 | British | 75 years |
| Jonathan Mark Whittaker | Director | 13 Mar 2003 | 30 Sept 2004 | British | 66 years |
| Kevin Graham Barry | Director | 28 Feb 1992 | 3 Oct 1994 | British | 72 years |
| Kevin Joseph Beatty | Director | 3 Sept 2001 | 24 Aug 2004 | British | 69 years |
| Kevin William Ward | Director | 20 Apr 2009 | 1 Feb 2012 | British | 63 years |
| Leslie Morgan | Director | 1 Jan 1994 | 27 Feb 1998 | British | 76 years |
| Martin Frederick Gower | Director | 1 Apr 1993 | 16 Apr 1997 | British | 81 years |
| Martyn John Hindley | Director | 1 Feb 2005 | 24 Oct 2008 | British | 64 years |
| Michael Paul Pelosi | Director | 15 May 1995 | 21 Mar 2011 | British | 73 years |
| Neil Hadkiss | Director | 28 Feb 1992 | 12 Oct 1992 | British | 68 years |
| Nicholas John Carter | Director | 28 Feb 1992 | 31 May 1993 | British | 74 years |
| Patrick Joseph Mcveigh | Director | 4 Mar 2002 | 6 Oct 2003 | British | 56 years |
| Paul Anthony Coyne | Director | 28 Feb 1992 | 8 Jun 1993 | British | 79 years |
| Paul Antony Jenkins | Director | 17 Apr 2001 | 1 Feb 2012 | British | 58 years |
| Paul Kenneth Baker | Director | 1 Mar 2004 | 1 Feb 2012 | British | 71 years |
| Paul Simon Collins | Director | 30 Dec 2012 | 24 Mar 2014 | English | 67 years |
| Paul Simon Collins | Secretary | 14 Oct 1996 | 24 Mar 2014 | British | - |
| Roland Edmondson Glass | Secretary | 28 Feb 1992 | 11 Oct 1996 | British | - |
| Stephen Andrew Auckland | Director | 21 Mar 2011 | 30 Dec 2012 | British | 71 years |
| Steve Anderson Dixon | Director | 19 Oct 2006 | 8 Jul 2011 | British | 68 years |
| Stuart Gerald Thomas | Director | 28 Feb 1992 | 31 Oct 2000 | British | 68 years |
| William Kent Richardson | Director | 19 Jul 1999 | 13 Mar 2003 | British | 73 years |