| Alan Timothy Feakins | Director | 19 Mar 2008 | 5 Jun 2009 | British | 65 years |
| Anthony Leon Philip Rabin | Director | 11 Aug 1998 | 27 Sept 2002 | British | 71 years |
| Arthur Joseph Dalton | Director | 11 Aug 1998 | 30 Apr 2003 | British | 67 years |
| Arthur Joseph Dalton | Director | 27 Oct 2003 | 20 Aug 2007 | British | 67 years |
| Bernard Chudley | Director | 17 Jan 2000 | 15 Sept 2003 | British | 60 years |
| Brian Roland Walker | Director | 10 May 2007 | 25 Aug 2021 | British | 71 years |
| Christopher John Baker | Director | 24 Jul 1998 | 11 Aug 1998 | British | 74 years |
| Christopher John Baker | Secretary | 20 Jul 1999 | 19 Jul 2005 | British | - |
| Christopher Loraine Spencer | Director | 8 Feb 2006 | 10 May 2007 | British | 71 years |
| David Harry Sussams | Director | 26 Apr 2011 | 17 Mar 2017 | British | 73 years |
| Donald James Stewart Dawson | Director | 4 Jan 2013 | 26 Aug 2016 | British | 64 years |
| George Douglas Stewart | Director | 26 Aug 2016 | 25 Aug 2021 | British | 66 years |
| Humphrey Alan Edward Cadoux Hudson | Director | 21 Jan 2003 | 15 Sept 2003 | British | 66 years |
| Ian Kenneth Rylatt | Director | 27 Sept 2002 | 7 Jan 2008 | British | 61 years |
| James Lionel Cohen | Director | 11 Aug 1998 | 14 Nov 2000 | British | 84 years |
| John Clarke Fox | Director | 25 Nov 1999 | 5 Nov 2003 | British | 81 years |
| Laurent Ferrari | Director | 21 Jul 2008 | 21 Jul 2008 | French | 65 years |
| Laurent Ferrari | Director | 21 Jul 2008 | 10 Jun 2009 | French | 65 years |
| Lynn Gladwell | Director | 7 Jan 2008 | 25 Aug 2021 | British | 60 years |
| Michael Anthony Nagle | Secretary | 19 Jul 1992 | 30 Sept 1993 | British | - |
| Michael Melville Brown Ross | Director | 5 Nov 2003 | 10 May 2007 | British | 83 years |
| Michael Nagle | Director | 19 Jul 1992 | 11 Aug 1998 | British | 74 years |
| Michael Nagle | Secretary | 3 Apr 1998 | 20 Jul 1999 | British | - |
| Miriam Maes | Director | 15 Sept 2003 | 16 Oct 2006 | Dutch | 70 years |
| Nicola Jayne Bryant | Director | 27 Oct 2003 | 30 Apr 2004 | British | 55 years |
| Patrick Anthony Clarke | Director | 26 Apr 2011 | 25 May 2016 | British | 65 years |
| Paul Andrew Cuttill | Director | 16 Oct 2006 | 10 Jun 2008 | British | 67 years |
| Paul David Northwood | Director | 11 Aug 1998 | 16 Jan 2000 | British | 69 years |
| Paul David Northwood | Director | 17 Jan 2000 | 30 Apr 2009 | British | 69 years |
| Richard John Roberts | Director | 11 Aug 1998 | 5 Nov 2003 | British | 62 years |
| Richard Martin Harpley | Director | 5 Jun 2009 | 26 Apr 2011 | British | 68 years |
| Robert Ernest Lane | Director | 10 Jun 2009 | 13 Apr 2011 | British | 74 years |
| Sheila Grace Tormey | Director | 1 Oct 1993 | 10 Aug 1998 | British | 84 years |
| Sheila Grace Tormey | Secretary | 1 Oct 1993 | 3 Apr 1998 | British | - |
| Stanley Maunder Wide | Director | 19 Jul 1992 | 30 Sept 1993 | British | 94 years |
| Stephen Dennis Trotter | Director | 5 Jun 2009 | 17 Feb 2016 | British | 59 years |
| Stephen Rex Burgin | Director | 11 Aug 1998 | 25 Nov 1999 | British | 69 years |
| Stuart Kenneth Leadill | Director | 11 Aug 1998 | 8 Feb 2006 | British | 73 years |
| Trevor John Gregory | Director | 11 Aug 1998 | 16 Jan 2000 | British | 70 years |
| Trevor John Gregory | Director | 17 Jan 2000 | 14 Jun 2017 | British | 70 years |