| Adrian Alastair Montague | Director | 3 Oct 2002 | 4 Dec 2004 | British | 78 years |
| Aidan Edward Cambridge Nelson | Director | 12 Sept 1995 | 1 Sept 1997 | British | 76 years |
| Andrew Haines | Director | 14 Aug 2018 | 17 Oct 2025 | British | 62 years |
| Brian Mellitt | Director | 31 Mar 1995 | 31 Mar 1999 | British | 86 years |
| Bridget Clare Rosewell | Director | 20 Jan 2011 | 31 Mar 2020 | British | 75 years |
| Cbe Hendy | Director | 16 Jul 2015 | 8 Jul 2024 | British | 73 years |
| Charles William Hoppe | Director | 3 Oct 2002 | 19 Jul 2007 | American | 91 years |
| Christopher Edward Wastie Green | Director | 26 Jun 2005 | 21 Jul 2010 | British | 83 years |
| Christopher Leslie Gibb | Director | 12 Nov 2013 | 30 Nov 2019 | British | 63 years |
| Christopher Richard Leah | Director | 14 Mar 1994 | 29 Aug 1997 | British | 79 years |
| Christopher Richard Leah | Director | 5 Oct 1998 | 3 Dec 2004 | British | 79 years |
| Christopher Trelawney Jago | Director | 12 Sept 1995 | 21 Aug 1997 | British | 80 years |
| David Alan Harding | Director | 30 Apr 2001 | 1 Feb 2002 | British | 79 years |
| David Allen | Director | 14 Mar 1994 | 12 Mar 1997 | British | 83 years |
| David Bailey | Director | 3 Oct 2002 | 30 Nov 2010 | British | 87 years |
| David Christopher Moss | Director | 28 Feb 1994 | 30 Apr 2001 | British | 80 years |
| David Edward Rayner | Director | 28 Feb 1994 | 6 Dec 1997 | British | 86 years |
| David Hartmann Higgins | Director | 1 Apr 2010 | 28 Feb 2014 | British | 72 years |
| David John Lynn Armstrong | Director | 14 Mar 1994 | 1 Sept 1997 | British | 79 years |
| Drusilla Maizey | Director | 22 Nov 2016 | 21 Nov 2023 | British | 69 years |
| Edgar Philip Beck | Director | 26 May 1999 | 18 Jun 2001 | British | 92 years |
| Geoffrey Douglas Kitchener | Secretary | 3 Mar 1994 | 28 Oct 2003 | British | - |
| George Sebastian Matthew Bull | Director | 30 Apr 2001 | 3 Oct 2002 | British | 66 years |
| Gerald Michael Nolan Corbett | Director | 8 Sept 1997 | 17 Nov 2000 | British | 75 years |
| Gerald Patrick O'keane | Director | 14 Mar 1994 | 30 Nov 1995 | British | 78 years |
| Gerard Absalom | Secretary | 27 Apr 1998 | 19 Jun 1998 | British | - |
| Gilbert George Howarth | Director | 14 Mar 1994 | 21 Aug 1997 | British | 74 years |
| Graham Charles Eccles | Director | 7 Feb 2010 | 18 Jul 2013 | British | 80 years |
| Hazel Louise Walker | Secretary | 21 May 2003 | 30 Sept 2011 | British | - |
| Iain Michael Coucher | Director | 3 Oct 2002 | 31 Oct 2010 | British | 65 years |
| Ian Gerald Mcallister | Director | 3 Oct 2002 | 22 Jul 2009 | British | 83 years |
| Ian James Buchan | Director | 5 Feb 2006 | 31 Mar 2010 | British | 80 years |
| Jacqueline Frances Holman | Secretary | 3 Mar 1994 | 27 Apr 1998 | British | - |
| James Gullen Morgan | Director | 14 Mar 1994 | 19 Jul 1996 | British | 78 years |
| Janis Carol Kong | Director | 13 Jan 2010 | 28 Sept 2016 | British | 75 years |
| Jim Scott Cornell | Director | 14 Dec 2001 | 22 Jul 2009 | British | 87 years |
| John Alexander Armitt | Director | 14 Dec 2001 | 31 Jul 2007 | British | 80 years |
| John Christopher Paul Edmonds | Director | 28 Feb 1994 | 28 Sept 1997 | British | 90 years |
| John Harris Robinson | Director | 4 Jun 2001 | 14 Dec 2001 | British | 86 years |
| John James O'brien | Director | 21 Dec 2001 | 19 Apr 2002 | British | 74 years |
| John Mogford | Director | 22 Nov 2016 | 31 Jan 2017 | British | 73 years |
| John Russell Ellis | Director | 14 Mar 1994 | 31 Mar 1995 | British | 88 years |
| Jonson Cox | Director | 1 Sept 2000 | 31 Jul 2001 | British | 70 years |
| Keith Lawrence Ludeman | Director | 5 Jul 2011 | 18 Jul 2014 | British | 76 years |
| Kenneth Iain Brown | Secretary | 10 Nov 2000 | 28 Oct 2003 | British | - |
| Lawrence John Haynes | Director | 26 Jan 2010 | 18 Jul 2014 | British | 74 years |
| Lindsay Crawford | Secretary | 18 May 2001 | 28 Oct 2003 | British | - |
| Malcolm Arthur Brinded | Director | 12 Oct 2010 | 20 Jul 2016 | British | 73 years |
| Mark Milford Power Carne | Director | 6 Jan 2014 | 13 Aug 2018 | British | 67 years |
| Martin Geoffrey Reynolds | Director | 12 Sept 1995 | 2 Sept 1997 | British | 79 years |
| Michael Graham Firth | Director | 4 Dec 2004 | 18 Jul 2014 | British | 84 years |
| Michael James Harrison | Director | 11 May 2020 | 30 Jun 2024 | British | 63 years |
| Michael O'higgins | Director | 21 Nov 2012 | 31 Aug 2018 | Irish | 72 years |
| Michael William Howell | Director | 1 Mar 1996 | 14 Mar 1997 | - | - |
| Nigel Richard Dewick | Secretary | 3 Mar 1994 | 28 Oct 2003 | British | - |
| Nigel Stuart Ogilvie | Director | 14 Mar 1994 | 21 Aug 1997 | British | 80 years |
| Norman Neill Broadhurst | Director | 14 Mar 1994 | 29 Feb 2000 | British | 85 years |
| Paul Frank Worthington | Secretary | 24 Nov 1997 | 17 Jan 2002 | British | - |
| Paul Gordon Prescott | Director | 12 Sept 1995 | 26 Aug 1997 | United Kingdom | 75 years |
| Paul Jonathan Plummer | Director | 1 Oct 2008 | 1 Nov 2015 | British | 61 years |
| Peter Henderson | Director | 3 Oct 2002 | 19 Jul 2012 | British | 72 years |
| Peter Strachan | Director | 12 Sept 1995 | 17 Apr 1997 | British | 67 years |
| Philip Dewhurst | Director | 4 Dec 1995 | 1 Sept 1997 | British | 77 years |
| Richard Howard Brown | Director | 1 Jul 2015 | 31 Mar 2020 | British | 73 years |
| Richard James Chenery | Director | 3 Jun 1998 | 8 Sept 1998 | British | 87 years |
| Richard John Middleton | Director | 14 Mar 1994 | 3 Oct 2002 | British | 71 years |
| Richard Neil Haythornthwaite | Director | 23 Mar 2009 | 19 Jul 2012 | British | 70 years |
| Richard Parry-jones | Director | 28 Mar 2012 | 15 Jul 2015 | British | 75 years |
| Robert Baynes Horton | Director | 28 Feb 1994 | 18 Aug 1999 | British | 87 years |
| Robert Den Besten | Director | 24 Sept 2003 | 30 Jun 2007 | Dutch | 86 years |
| Robert Haldane Smith Of Kelvin | Director | 3 Oct 2002 | 24 Sept 2003 | British | 82 years |
| Robert Hill | Director | 14 Mar 1994 | 1 Sept 1997 | British | 78 years |
| Robert William Brighouse | Director | 1 Jan 2016 | 31 Jul 2024 | British | 69 years |
| Robin William Gisby | Director | 1 Oct 2008 | 27 Feb 2015 | British | 70 years |
| Roderick Ian Muttram | Director | 14 Mar 1994 | 30 Dec 2000 | British | 74 years |
| Ronald Andrew Henderson | Director | 3 Oct 2002 | 20 Apr 2009 | British | 80 years |
| Ross Edward Sayers | Director | 3 Oct 2002 | 25 Nov 2005 | New Zealand | 85 years |
| Sharon Emma Flood | Director | 25 Aug 2014 | 23 Aug 2020 | British,irish | 61 years |
| Simon Anthony Murray | Director | 1 Dec 1998 | 14 Jun 2001 | British | 75 years |
| Simon Kingsley Osborne | Director | 3 Jun 1998 | 8 Sept 1998 | British | 78 years |
| Simon Kingsley Osborne | Secretary | 28 Feb 1994 | 17 Jan 2002 | British | - |
| Simon Neil Kirby | Director | 1 Oct 2008 | 18 May 2014 | British | 61 years |
| Simon Patrick Butcher | Director | 20 Apr 2009 | 24 Feb 2016 | British | 59 years |
| Stephen George Russell | Director | 19 Sept 2007 | 19 Jul 2012 | British | 81 years |
| Steven Colin Hornbuckle | Secretary | 15 Sept 1999 | 10 Nov 2000 | British | - |
| Steven Marshall | Director | 1 Dec 1999 | 14 Dec 2001 | British | 69 years |
| Stuart Malcolm Kelly | Secretary | 26 May 2017 | 29 Jul 2022 | - | - |
| Suzanne Elizabeth Wise | Secretary | 21 Feb 2012 | 26 May 2017 | - | - |
| Yvonne Jean Constance | Director | 1 May 2005 | 21 Jul 2010 | British | 83 years |