| DHILLON, Sejal ACTIVE | Director | 23 Apr 2020 | | United Kingdom | July 1963 | Pollards Wood, Nightingales Lane, Chalfont St. Giles, Buckinghamshire, HP8 4SP, United Kingdom |
| JONES, Katherine Ann ACTIVE | Director | 14 Nov 2019 | | United Kingdom | October 1976 | Pollards Wood, Nightingales Lane, Chalfont St. Giles, Buckinghamshire, HP8 4SP, United Kingdom |
| HOOD, Daniel Carey Cazel RESIGNED | Secretary | 25 Apr 2008 | 08 May 2012 | | | Pollards Wood, Nightingales Lane, Chalfont St. Giles, Buckinghamshire, HP8 4SP |
| KALMAN, Judit RESIGNED | Secretary | 26 Nov 2015 | 23 Sep 2019 | | | Amersham Place, Little Chalfont, Buckinghamshire, HP7 9NA, United Kingdom |
| SIMMONDS, John RESIGNED | Secretary | | 25 Apr 2008 | | | Osierbed House Hall Road, Little Bealings, Woodbridge, Suffolk, IP13 6NA |
| WONG, Barry Kar Hoa RESIGNED | Secretary | 08 May 2012 | 26 Nov 2015 | | | Amersham, Place, Little Chalfont, Buckinghamshire, HP7 9NA, United Kingdom |
| BAKER, Arthur Graham RESIGNED | Director | | 08 Jan 1996 | England | August 1945 | 82 Oakwood Road, Maidstone, Kent, ME16 8AL |
| BONNAR, John Niven RESIGNED | Director | 29 Jan 2004 | 31 May 2007 | | December 1946 | The Red House, Wyre Lane, Long Marston, Stratford-Upon-Avon, Warwickshire, CV37 8RQ |
| COOMBS, Timothy James, Dr RESIGNED | Director | 12 Mar 2001 | 30 Nov 2002 | United Kingdom | November 1952 | Three Ponds, Heckfield Green, Hoxne, Suffolk, IP21 5AB |
| COOPER, Peter Harry RESIGNED | Director | 01 Sep 1996 | 28 Jun 2002 | England | January 1954 | 26 Dabernon Drive, Cobham, Surrey, KT11 3JD |
| DALE, Ian Alistair RESIGNED | Director | 24 Sep 2019 | 23 Apr 2020 | England | November 1963 | Pollards Wood, Nightingales Lane, Chalfont St. Giles, Buckinghamshire, HP8 4SP, United Kingdom |
| DE LOS ANGELES KHOURY GONZALO, Maria RESIGNED | Director | 11 Dec 2017 | 23 Sep 2019 | England | September 1970 | Amersham Place, Little Chalfont, Buckinghamshire, HP7 9NA, United Kingdom |
| DOOL, Raymond Richard RESIGNED | Director | 05 Feb 2010 | 06 Jun 2013 | United Kingdom | March 1954 | Pollards Wood, Nightingales Lane, Chalfont St. Giles, Buckinghamshire, HP8 4SP, United Kingdom |
| EMHISER, William RESIGNED | Director | 01 Nov 2005 | 16 Jan 2007 | | March 1954 | A Erskine House, 59 Davis Street, London, W1K 5JT |
| ERNEBERG, Jan Ingvar RESIGNED | Director | 25 Apr 2008 | 08 May 2012 | United Kingdom | January 1952 | The Maynard, Centre, Forest Farm Road, Cardiff, CF14 7YT, United Kingdom |
| EVANS, David Roger RESIGNED | Director | 01 Jan 2006 | 24 May 2007 | England | October 1946 | Yoxhall Lodge, 10 Worsley Road, Southsea, Hampshire, PO5 3DY |
| FULTON, William Henry RESIGNED | Director | | 31 Dec 2000 | England | May 1934 | 3 Island Reach, 10 Brudenell Road, Poole, Dorset, BH13 7NN |
| GASSEN, Hans Gunter, Professor Doctor RESIGNED | Director | 01 Sep 2006 | 25 Apr 2008 | | April 1938 | Am Muhlberg 37, Reinheim, Hessen D-64354, Germany |
| GOOD, Mary Lowe, Dr RESIGNED | Director | 01 Jul 1998 | 01 Dec 2002 | | June 1931 | 13824 Rivercrest Drive, Little Rock, Arkansas 72212, Usa |
| GREENHALGH, Philip RESIGNED | Director | 04 Aug 2003 | 31 May 2007 | England | May 1961 | Orchard View 60 Haw Lane, Bledlow Ridge, High Wycombe, Buckinghamshire, HP14 4JH |
| HARPER, Michael RESIGNED | Director | 17 Dec 2007 | 25 Apr 2008 | | January 1945 | Barley End, Stocks Road, Aldbury, Tring, Hertfordshire, HP23 5RZ |
| HAYES, Alan, Dr RESIGNED | Director | 01 Jan 1993 | 31 Dec 1996 | | June 1930 | Highlands Fridays Hill, Fernhurst, Haslemere, Surrey, GU27 3LL |
| HEWITT, Jeffrey Lindsey RESIGNED | Director | 24 May 2007 | 25 Apr 2008 | United Kingdom | September 1947 | Palo Alto, 6 College Way, Northwood, Middlesex, HA6 2BL |
| HOOD, Daniel Carey Cazel RESIGNED | Director | 25 Apr 2008 | 04 Feb 2010 | Uk | January 1973 | Pollards Wood, Nightingales Lane, Chalfont St. Giles, Buckinghamshire, HP8 4SP |
| HYDE, Lawrence Henry RESIGNED | Director | | 31 Mar 1999 | | July 1924 | 637 Main Street, Harwich Port, Mass 02646, FOREIGN, Usa |
| JONES, John Stephen Major RESIGNED | Director | | 08 Jan 1996 | | April 1930 | The Elms House, Twyford, Winchester, Hants, SO21 1FQ |
| JOVAN, Morana RESIGNED | Director | 28 Mar 2003 | 24 May 2006 | | January 1967 | 62a Pont Street, London, SW1X 0AE |
| KEHLER, Hinrich, Dr RESIGNED | Director | 01 Jan 2005 | 25 Apr 2008 | | April 1941 | Rankestrasse 79, 90461 Nurnberg, FOREIGN, Germany |
| KELLY, Howard RESIGNED | Director | 25 Aug 2003 | 25 Nov 2004 | | June 1957 | Russett House, 63 Onsley Road, Weybridge, Surrey |
| KNIGHT, Colin RESIGNED | Director | | 08 Jan 1996 | | July 1932 | Dormer House, 25 Holtwood Avenue, Aylesford, Kent, ME20 7QH |
| LEIGH PEMBERTON, Jeremy RESIGNED | Director | | 31 Dec 1994 | England | November 1933 | Hill House, Wormshill, Sittingbourne, Kent, ME9 0TS |
| LIBBEY, Edward Thomas RESIGNED | Director | 01 Jan 1995 | 30 Jun 1997 | | February 1947 | 40 Hosmer Road, Concord Ma 01742, Usa, FOREIGN |
| MAKELA, Jan RESIGNED | Director | 21 Aug 2017 | 08 Dec 2017 | United Kingdom | December 1968 | The Grove Centre, White Lion Road, Amersham, Buckinghamshire, HP7 9LL, United Kingdom |
| MATHES, Sorrell M RESIGNED | Director | 01 Jan 2001 | 29 Nov 2002 | | January 1936 | 33 East 70th Street, New York, Ny 10021, Usa |
| MAY, Simon, Dr RESIGNED | Director | 30 Jun 1994 | 25 Apr 2008 | | August 1956 | 129 Riverview Gardens, London, SW13 9RA |
| MCNALLY, Thomas RESIGNED | Director | 27 Mar 2003 | 24 May 2007 | | September 1947 | 27 Waterway Island Drive, Isle Of Palms, South Carolina 29451, U S A |
| MILLER, Stuart Purves RESIGNED | Director | 24 Jul 2002 | 27 May 2003 | England | March 1949 | 1 Meadway Park, Gerards Cross, Buckinghamshire, SL9 7NN |
| MURPHY, Kieran Pius RESIGNED | Director | 22 Jan 2007 | 16 Aug 2017 | United Kingdom | February 1963 | The Grove, Centre, White Lion Road, Amersham, Buckinghamshire, HP7 9LL, England |
| O'NEILL, Kevin Michael RESIGNED | Director | 05 Mar 2015 | 23 Apr 2020 | United Kingdom | December 1968 | Pollards Wood, Nightingales Lane, Chalfont St Giles, Buckinghamshire, HP8 4SP, United Kingdom |
| PERROTT, Hugh Richard Iliff RESIGNED | Director | | 30 Jun 1996 | | July 1947 | Gilletts Farm Oast, Water Lane, Smarden, Kent, TN27 8QB |
| REEVE ANGEL, Richard RESIGNED | Director | | 31 Dec 1993 | | August 1928 | Spring Walk, Neville Court, Tunbridge Wells, Kent, TN4 8NJ |
| RICKARD, Christopher John RESIGNED | Director | 04 Jun 2007 | 14 Jul 2008 | United Kingdom | December 1956 | The Beeches, Straight Mile Ampfield, Romsey, Hampshire, SO51 9BB |
| ROMAN, Eric Richard RESIGNED | Director | 06 Jun 2013 | 05 Mar 2015 | England | January 1967 | Amersham Place, Little Chalfont, Buckinghamshire, HP7 9NA, England |
| SMITH, David John Harry, Dr RESIGNED | Director | 01 Jan 1995 | 07 Sep 2001 | | August 1941 | 20 Fitzroy Road, Fleet, Hampshire, GU13 8JJ |
| SMITHERS, Andrew Reeve Waldron RESIGNED | Director | | 25 Apr 2002 | England | September 1937 | 55 Melbury Court, London, W8 6NJ |
| THIAN, Robert Peter RESIGNED | Director | 07 Oct 2002 | 17 Dec 2007 | | August 1943 | 15a Princes Gate Mews, London, SW7 2PS |
| VAVASSORI, Mara RESIGNED | Director | 25 Apr 2008 | 31 Dec 2015 | England | January 1973 | The Grove Centre, White Lion Road, Amersham, Buckinghamshire, HP7 9LL, United Kingdom |
| WOOD, Alan John RESIGNED | Director | 01 Jan 2006 | 25 Apr 2008 | United Kingdom | March 1947 | Fairmont, Eriswell Road, Walton On Thames, Surrey, KT12 5BW |