| CLARK, Tricia Ann ACTIVE | Director | 29 Mar 2017 | | United States | October 1976 | 3000, N Grandview Blvd, Waukesha, Wisconsin, 53188, United States |
| CONCI, Federica ACTIVE | Director | 12 Apr 2023 | | United Kingdom | October 1972 | Pollards Wood, Nightingales Lane, Chalfont St. Giles, Buckinghamshire, HP8 4SP, United Kingdom |
| MOUNTJOY, Darran ACTIVE | Director | 10 Oct 2023 | | United Kingdom | July 1965 | The Grove Centre, White Lion Road, Amersham, Buckinghamshire, HP7 9LL, United Kingdom |
| O'NEILL, Kevin Michael ACTIVE | Director | 01 Jan 2008 | | United Kingdom | December 1968 | Pollards Wood, Nightingales Lane, Chalfont St Giles, Buckinghamshire, HP8 4SP, United Kingdom |
| ALLNUTT, Robert Edward Bruce RESIGNED | Secretary | 04 Dec 1997 | 08 Apr 2004 | | | Rye House Shenstone Hill, Berkhamsted, Hertfordshire, HP4 2PA |
| BUSHILL-MATTHEWS, William Henry RESIGNED | Secretary | 13 Jul 2018 | 13 Jun 2019 | | | Amersham Place, Little Chalfont, Buckinghamshire, HP7 9NA, United Kingdom |
| DU TOIT, Jani RESIGNED | Secretary | 16 Jul 2019 | 15 Sep 2022 | | | Pollards Wood, Nightingales Lane, Chalfont St. Giles, Buckinghamshire, HP8 4SP, United Kingdom |
| DU TOIT, Jani RESIGNED | Secretary | 26 Jun 2017 | 13 Jul 2018 | | | Pollards Wood, Nightingales Lane, Chalfont St Giles, Buckinghamshire, HP8 4SP, United Kingdom |
| HENTON, Stephen Henry RESIGNED | Secretary | 04 Nov 1993 | 21 Dec 1995 | | | 6 Lucastes Lane, Haywards Heath, West Sussex, RH16 1LD |
| HOOD, Daniel Carey Cazel RESIGNED | Secretary | 25 Mar 2011 | 02 Nov 2011 | | | Pollards Wood, Nightingales Lane, Chalfont St. Giles, Buckinghamshire, HP8 4SP, United Kingdom |
| KERR, Giles Francis Bertram RESIGNED | Secretary | 21 Dec 1995 | 04 Dec 1997 | | | 6 The Croft, Haddenham, Aylesbury, Buckinghamshire, HP17 8AS |
| QURESHI, Shakaib RESIGNED | Secretary | 02 Nov 2011 | 26 Jun 2012 | | | Pollards, Wood, Nightingales Lane, Chalfont St. Giles, Buckinghamshire, HP8 4SP, United Kingdom |
| REES, Thomas Oliver Vaughan RESIGNED | Secretary | 01 Nov 2007 | 25 Mar 2011 | | | Pollards Wood, Nightingales Lane, Chalfont St Giles, Buckinghamshire, HP8 4SP |
| SOLMSSEN, Peter RESIGNED | Secretary | 08 Apr 2004 | 01 Nov 2007 | | | Link House, St Mary's Way, Chesham, Buckinghamshire, HP5 1HR |
| STEPHENSON, Ross Kirkpatrick RESIGNED | Secretary | | 04 Nov 1993 | | | 4 Upper Addison Gardens, London, W14 8AL |
| WHITWORTH, Andrew Mark RESIGNED | Secretary | 31 Oct 2012 | 27 Jan 2017 | | | Pollards, Wood, Nightingales Lane, Chalfont St. Giles, Buckinghamshire, HP8 4SP, United Kingdom |
| AASER, Svein RESIGNED | Director | 21 Oct 1997 | 31 Aug 1998 | | October 1946 | 14 Grange Park Place, London, SW20 0EE |
| ALLNER, Andrew James RESIGNED | Director | 01 Sep 1996 | 27 Nov 1997 | | December 1953 | 9 The Crescent, Barnes, London, SW13 0NN |
| BANE, Simon Robert RESIGNED | Director | 26 Jul 2007 | 09 Oct 2007 | United Kingdom | October 1971 | Pollards Wood, Nightingales Lane, Chalfont St Giles, Buckinghamshire, HP8 4SP |
| BATTERSBY, George William RESIGNED | Director | 01 Sep 2000 | 08 Apr 2004 | | August 1946 | 7th Floor The Point, 37 North Wharf Road, London, W2 1LA |
| BERGER, Trond RESIGNED | Director | 21 Oct 1997 | 06 Aug 1998 | | June 1957 | 8 Wyngrave Place, Knotty Green, Beaconsfield, Buckinghamshire, HP9 1XX |
| BRYDON, Donald Hood RESIGNED | Director | 06 Jun 1997 | 08 Apr 2004 | | May 1945 | 22 Hill Road, St John's Wood, London, NW8 9QG |
| CARR, Andrew RESIGNED | Director | 09 May 2002 | 31 Jan 2005 | | October 1954 | 576 Snowdon Lane, Princeton, New Jersey 08540, United States |
| CASTELL, William Martin, Sir RESIGNED | Director | | 10 Mar 2006 | | April 1947 | 102 Ebury Mews, London, SW1W 9NX |
| CHALLEN, David John RESIGNED | Director | 05 Aug 2003 | 08 Apr 2004 | | March 1943 | 9 Alma Terrace, Allen Street, London, W8 6QY |
| CORNELL JR., Richard Arlen RESIGNED | Director | 25 Jul 2011 | 03 Aug 2016 | Usa | October 1958 | 3350, N. Ridge Avenue, Arlington Heights, Illinois 60004, Usa |
| CRESSWELL, Ronald Morton, Professor RESIGNED | Director | 31 Aug 1995 | 11 Oct 2000 | | September 1934 | 1968 Boulder Drive, Ann Arbor, Michigan 48104, Usa |
| CRUMPTON, Michael Joseph, Dr RESIGNED | Director | | 21 Oct 1997 | | June 1929 | 33 Homefield Road, Radlett, Hertfordshire, WD7 8PX |
| DALE, Ian Alistair RESIGNED | Director | 03 Aug 2016 | 01 Oct 2023 | England | November 1963 | Pollards Wood, Nightingales Lane, Chalfont St. Giles, Buckinghamshire, HP8 4SP, United Kingdom |
| ERNEBERG, Jan Ingvar RESIGNED | Director | 19 Jun 2006 | 12 May 2008 | Sweden | January 1952 | Wallingatan 44a, Se-111 24 Stockholm, FOREIGN, Sweden |
| GREEN, Robert Charles RESIGNED | Director | 16 Mar 2005 | 23 Mar 2006 | | October 1967 | Pollards Wood,, Nightingales Lane, Chalfont St Giles, Buckinghamshire, HP8 4SP |
| GRENOUILLET, Philippe RESIGNED | Director | 19 Jun 2006 | 19 Jan 2015 | France | November 1952 | 283, Rue De La Miniere, 78533 Buc, France |
| GRIFFITHS, Gareth Meredith RESIGNED | Director | | 31 Dec 1993 | | November 1931 | Oak Tree Cottage, Coleshill, Amersham, Bucks, HP7 0LB |
| HACKETT, Elizabeth RESIGNED | Director | 19 Jan 2015 | 29 Mar 2017 | Usa | November 1956 | 3000, North Grandview Boulevard, Waukesha, Wi 53188-1696, Usa |
| JACOBSEN, Trond RESIGNED | Director | 21 Oct 1997 | 17 Jun 1999 | | December 1944 | Pareliusvn 15, Oslo, 1177, Norway |
| JEANS, David John RESIGNED | Director | 22 Dec 2005 | 31 Dec 2008 | United Kingdom | February 1950 | Jay Corner, 16 Wilton Road, Beaconsfield, Buckinghamshire, HP9 2BS |
| JOHANSEN, John Henrik RESIGNED | Director | 21 Oct 1997 | 08 Apr 2004 | | May 1946 | Vekterveien 6b, 0681 Oslo, FOREIGN, Norway |
| KERR, Giles Francis Bertram RESIGNED | Director | 27 Nov 1997 | 31 May 2004 | | July 1959 | Chilcote House, White Lion Road, Amersham, Buckinghamshire, HP7 9LL |
| KILROY, Thomas Edward RESIGNED | Director | 01 Jan 2009 | 07 Aug 2009 | | April 1970 | Pollards Wood, Nightingales Lane, Chalfont St Giles, Buckinghamshire, HP8 4SB |
| KRAMER, Kelly Anne RESIGNED | Director | 23 Mar 2006 | 19 Mar 2007 | | August 1967 | 101 Carnegie Center, Princeton, New Jersey 08540, FOREIGN, United States |
| LAERDAL, Tore RESIGNED | Director | 21 Oct 1997 | 06 May 1999 | | June 1952 | Gauselkneiken 49, Gausel, Rogaland, N4032, Norway |
| LAPTHORNE, Richard Douglas RESIGNED | Director | | 07 May 2003 | United Kingdom | April 1943 | Mill Barn Mill Lane, Weston Turville, Aylesbury, Buckinghamshire, HP22 5RG |
| LOESCHER, Peter Hans RESIGNED | Director | 01 Dec 2002 | 30 Apr 2006 | | September 1957 | Pollards Wood, Nightingales Lane, Chalfont St. Giles, Buckinghamshire, HP8 4SP |
| LONG, Ronald Eric RESIGNED | Director | | 23 Mar 2001 | England | January 1947 | Cedar Tree House, Manor Road, Penn, Buckinghamshire, HP10 8JA |
| MANUELE, Christopher Louis RESIGNED | Director | 07 Feb 2008 | 12 Aug 2008 | | December 1951 | 530 S. Newbury Place, Arlington Heights, Illinois 60005-2024, United States |
| MARKIN, John RESIGNED | Director | 07 Dec 2009 | 03 Dec 2010 | Usa | May 1958 | 63, Community Drive, Sanford, Maine, 04073-5809, Usa |
| MAYNARD, John Charles, Dr RESIGNED | Director | | 21 Oct 1997 | | May 1932 | Cyterswood, South Park, Gerrards Cross, Bucks, SL9 |
| MCCARTHY, Kathryn RESIGNED | Director | 19 Mar 2007 | 31 Dec 2007 | | July 1968 | Pollards Wood, Nightingales Lane, Chalfont St. Giles, Buckinghamshire, HP8 4SP |
| MCKILLOP, Thomas Fulton Wilson, Dr RESIGNED | Director | | 09 Jan 2001 | | March 1943 | Moss Cottage Lowes Lane, Gawsworth, Macclesfield, Cheshire, SK11 9QR |
| MICHELET, Ase Aulie RESIGNED | Director | 19 Jun 2006 | 06 Feb 2008 | | October 1952 | Aspehaugveien 25, 0376 Oslo, FOREIGN, Norway |
| MURPHY, Michael Joseph RESIGNED | Director | 12 May 2008 | 20 Mar 2020 | United Kingdom | February 1965 | Pollards Wood, Nightingales Lane, Chalfont St. Giles, Buckinghamshire, HP8 4SP, United Kingdom |
| NARAYAN, Adrian Ashwin RESIGNED | Director | 24 Mar 2020 | 30 Jun 2022 | United Kingdom | October 1973 | Pollards Wood, Nightingales Lane, Chalfont St. Giles, Buckinghamshire, HP8 4SP, United Kingdom |
| NIXON, Edwin, Sir RESIGNED | Director | | 19 Jul 1996 | | June 1925 | 45 Thames Quay, London, SW10 0UY |
| ODFJELL, Johan Fredrik RESIGNED | Director | 21 Oct 1997 | 08 Apr 2004 | | August 1948 | Shipanesveien 318, Hjellestad 506, Norway |
| PADFIELD, John Malcolm, Dr RESIGNED | Director | 01 Sep 1999 | 31 Dec 2002 | England | January 1947 | Ashdon Hall, Ashdon, Saffron Walden, Essex, CB10 2HF |
| PAGE, Nicholas William RESIGNED | Director | 13 Aug 2008 | 22 Dec 2010 | United Kingdom | June 1962 | The Grove Centre, Amersham, Buckinghamshire, HP7 9LL, United Kingdom |
| PATTERSON, John Simon, Dr RESIGNED | Director | 09 Jan 2001 | 08 Apr 2004 | | January 1948 | Park End, Bradford Lane, Nether Alderley, Cheshire, SK10 4TR |
| PETERS, David Keith, Professor Sir RESIGNED | Director | 03 Aug 2000 | 08 Apr 2004 | | July 1938 | 7 Chaucer Road, Cambridge, CB2 2EB |
| REES, Thomas Oliver Vaughan RESIGNED | Director | 26 Jul 2007 | 09 Oct 2007 | Turkey | January 1973 | Pollards Wood, Nightingales Lane, Chalfont St Giles, Buckinghamshire, HP8 4SP |
| REJEANGE, Jacques Fernand RESIGNED | Director | 21 Oct 1997 | 08 Apr 2004 | | March 1940 | Le Bied 48, Ch-2015 Areuse, Switzerland |
| SOLMSSEN, Peter RESIGNED | Director | 08 Apr 2004 | 01 Nov 2007 | | January 1955 | Link House, St Mary's Way, Chesham, Buckinghamshire, HP5 1HR |
| STEPHENSON, Ross Kirkpatrick RESIGNED | Director | | 31 Mar 1996 | | January 1961 | 4 Upper Addison Gardens, London, W14 8AL |
| TAKABATAKE, Sueaki RESIGNED | Director | | 21 Oct 1997 | | July 1940 | Flat 1 Hamilton House, 81 Southampton Row, London, WC1B 4HA |
| THORSBY, Erik, Professor RESIGNED | Director | 22 Oct 1997 | 08 Apr 2004 | | July 1938 | Villaveien 37, Oslo, 0369, FOREIGN, Norway |
| UHLEN, Mathias, Professor RESIGNED | Director | 09 May 2002 | 08 Apr 2004 | | May 1954 | Radmansgatan 4 S 114 25, Stockholm, Sweden, FOREIGN |
| VACHON, Mark RESIGNED | Director | 08 Apr 2004 | 16 Mar 2005 | | October 1958 | 235 East Laurel Circle, Delafield, Wisconsin 53018, Usa |
| WHITE, Andrew Christopher RESIGNED | Director | 16 Mar 2005 | 14 Dec 2006 | | August 1954 | 3901 Castle Hayne Road, Wilmington, North Carolina 28402-2819, United States |