| FREEMAN, Brian John ACTIVE | Director | 20 May 2015 | | United Kingdom | September 1964 | Bridge House, 69 London Road, Twickenham, TW1 3SP, England |
| FRASER, David Baird RESIGNED | Secretary | | 09 Feb 2005 | | | 50 South Eaton Place, London, SW1W 9JJ |
| GOODMAN, Philip Stanley RESIGNED | Secretary | 09 Feb 2005 | 14 Nov 2019 | | | 21 Dellcott Close, Welwyn Garden City, Hertfordshire, AL8 7BB |
| CLARKE, Farine Anna RESIGNED | Director | 25 Jul 1996 | 31 Dec 2001 | England | August 1962 | Farthings, Newick Lane, Mayfield, East Sussex, TN20 6RF |
| COWHIG, Jeremy Robert RESIGNED | Director | | 21 Jul 1995 | | October 1945 | 166 High Road, Woodford Green, Essex, IG8 9EF |
| DOWNEY, Marion Rose RESIGNED | Director | 30 Apr 1993 | 10 Oct 1994 | | January 1958 | 172 St Pauls Road, Islington, London, N1 2LL |
| DUCKWORTH, Jeremy Dyce RESIGNED | Director | 24 Apr 2006 | 20 May 2015 | England | May 1963 | Swinbrook Cottage, Swinbrook, Burford, Oxon, OX18 4DZ |
| DUNCAN, Colin, Dr RESIGNED | Director | 18 Dec 1998 | 18 Dec 2006 | | October 1950 | Green Lodge, Ridgeway, High Wycombe, Buckinghamshire, HP13 5BE |
| DUNCAN, Colin, Dr RESIGNED | Director | 30 Apr 1993 | 31 Dec 1995 | | October 1950 | Green Lodge, Ridgeway, High Wycombe, Buckinghamshire, HP13 5BE |
| DURHAM, Martin Bernard RESIGNED | Director | 18 Dec 1998 | 03 Nov 2008 | United Kingdom | September 1953 | 53 Langley Avenue, Surbiton, Surrey, KT6 6QR |
| FRANKLIN, Malcolm Frank RESIGNED | Director | | 30 Apr 1993 | | March 1947 | Honey Cottage 4 Hynesbury Road, Friarscliff, Christchurch, Dorset, BH23 4ER |
| FRASER, David Baird RESIGNED | Director | 26 Jul 1999 | 06 Nov 2000 | United Kingdom | October 1939 | 50 South Eaton Place, London, SW1W 9JJ |
| FRASER, David Baird RESIGNED | Director | | 18 Dec 1998 | | October 1939 | 24 Malmains Way, Beckenham, Kent, BR3 6SA |
| FREEMAN, Brian John RESIGNED | Director | 11 Dec 2002 | 03 Nov 2008 | United Kingdom | September 1964 | 1 Fitzalan Road, Claygate, Surrey, KT10 0LX |
| GOODMAN, Philip Stanley RESIGNED | Director | 20 Sep 2010 | 21 Jun 2011 | England | July 1959 | 174 Hammersmith Road, London, W6 7JP |
| HESELTINE, The Rt Hon The Lord RESIGNED | Director | 05 Nov 1997 | 18 Dec 1998 | | March 1933 | 30 Chapel Street, London, SW1 |
| HILLER, Caroline Bettina RESIGNED | Director | 30 Apr 1993 | 10 Oct 1994 | | April 1957 | 27 Campden Street, London, W8 7EP |
| HUTCHINGS, Paul Derek RESIGNED | Director | 30 Apr 1993 | 09 Dec 1997 | | November 1952 | 32 North Down, South Croydon, Surrey, CR2 9PA |
| KEMP, Alan Stephen, Dr RESIGNED | Director | 07 Jul 2000 | 06 Nov 2000 | United Kingdom | December 1950 | 7 The Garth, Cobham, Surrey, KT11 2DZ |
| LILLYWHITE, Kenneth John RESIGNED | Director | | 15 May 1998 | | February 1947 | Farthings, Burkes Road, Beaconsfield, Buckinghamshire, HP9 1PB |
| LITTLE, James Robert RESIGNED | Director | 09 Aug 1999 | 01 Nov 2001 | Uk | April 1965 | 76 South Park Road, Wimbledon, London, SW19 8SZ |
| LITTLE, James Robert RESIGNED | Director | 04 Mar 1998 | 18 Dec 1998 | Uk | April 1965 | 76 South Park Road, Wimbledon, London, SW19 8SZ |
| MASTERS, John Lindsay RESIGNED | Director | | 18 Dec 1998 | United Kingdom | October 1932 | 7 Lansdowne House, Lansdowne Road, London, W11 3LP |
| MILLS, Dominic Mark Heath RESIGNED | Director | 01 Nov 2001 | 03 Nov 2008 | United Kingdom | March 1955 | 38 Tudor Road, Kingston Upon Thames, Surrey, KT2 6AS |
| PECOVER, William Geoffrey RESIGNED | Director | 18 Dec 1998 | 01 Nov 2001 | Usa | September 1961 | 12 Hawkwood Lane, Greenwich, Connecticut Ct06830, Usa |
| STAHELIN, Philippa Jane RESIGNED | Director | 30 Apr 1993 | 31 Dec 1995 | | April 1961 | 6 Cornwall Road, Twickenham, Middlesex, TW1 3LS |
| TINDALL, Simon Papillon RESIGNED | Director | | 06 Nov 2000 | England | February 1938 | 31 Lonsdale Road, London, SW13 9JP |
| VERDON-ROE, Eric Alliott RESIGNED | Director | 06 Nov 2000 | 03 Nov 2008 | England | August 1952 | Westrow House, Holwell, Sherborne, Dorset, DT9 5LF |
| WELLAND, Peter Charles RESIGNED | Director | 30 May 2001 | 22 Jan 2008 | England | September 1954 | Vernon Lodge, Beech Hill Road, Beech Hill, Reading, Berkshire, RG7 2AX |