| ALLCOCK, Alan, Dr ACTIVE | Director | 04 Jul 2014 | | England | September 1949 | 8-10 Boston Place, London, NW1 6QH |
| BELSHAW, Chris, Dr ACTIVE | Director | 10 Mar 2025 | | England | March 1944 | 8-10 Boston Place, London, NW1 6QH |
| NEAVES, Judith, Dr ACTIVE | Director | 05 Nov 2023 | | England | November 1959 | 8-10 Boston Place, London, NW1 6QH |
| SURRIDGE, Catherine Jane ACTIVE | Director | 18 Oct 2018 | | England | March 1955 | 8-10 Boston Place, London, NW1 6QH |
| TANNER, John Albert, Dr ACTIVE | Director | 21 Oct 2020 | | England | May 1952 | 8-10 Boston Place, London, NW1 6QH |
| MACDONALD, Roderic Sinclair, Dr RESIGNED | Secretary | | 01 Dec 2024 | | | 23 British Grove, Chiswick, London, W4 2NL |
| ABBAS, Babar, Dr RESIGNED | Director | 04 Jul 2014 | 11 Oct 2019 | United Kingdom | June 1955 | 2, Earle Gardens, Kingston Upon Thames, Surrey, KT2 5TB, England |
| ADEL, Ghulam RESIGNED | Director | 10 Sep 2016 | 07 Feb 2018 | England | August 1972 | 8, Boston Place, London, NW1 6QH, England |
| AITKEN, George Edward, Dr RESIGNED | Director | | 08 Oct 1993 | | June 1920 | 140 Clarence Gate Gardens, London, NW1 6AN |
| ANDREWS, Mark RESIGNED | Director | 19 Sep 2016 | 07 Feb 2018 | England | June 1974 | 8-10 Boston Place, London, NW1 6QH |
| BALL, Sidney Shearer, Dr RESIGNED | Director | | 15 Nov 1991 | | October 1909 | 3 Harrowby Court, London, W1H 5FA |
| BARTLETT, Calum Iain Stewart, Dr RESIGNED | Director | | 19 Oct 1992 | | August 1925 | 1 The Green, Frimley Green, Camberley, Surrey, GU16 6HF |
| DAVIES, Alan Lloyd, Dr RESIGNED | Director | 04 Jul 2013 | 10 Sep 2016 | England | December 1935 | 8-10 Boston Place, London, NW1 6QH |
| DOVEY, Hugh RESIGNED | Director | | 05 Jul 2013 | United Kingdom | October 1929 | Woodbridge Benty Heath Lane, Willaston, South Wirral, Merseyside, L64 1SD |
| DUTTON, Claude Scott, Dr RESIGNED | Director | | 08 Jul 2011 | United Kingdom | August 1931 | Rose Cottage Stroud Road, Whaddon, Gloucester, Gloucestershire, GL4 0UG |
| GIBBONS, Ann RESIGNED | Director | 04 Jul 2013 | 10 Sep 2016 | England | November 1953 | 8-10 Boston Place, London, NW1 6QH |
| GRIBBLE, Richard, Dr RESIGNED | Director | 06 Jul 2018 | 25 Aug 2021 | England | January 1944 | 8-10 Boston Place, London, NW1 6QH |
| INKLEBARGER, James, Dr RESIGNED | Director | 05 Nov 2023 | 10 Mar 2025 | England | May 1958 | 8-10 Boston Place, London, NW1 6QH |
| JACKS, Thomas Alasdair RESIGNED | Director | 11 Oct 2007 | 07 Jul 2017 | United Kingdom | February 1956 | Farthing House, Bishton Lane, Tidenham, Gloucestershire, NP6 7LG |
| KAVANAGH, Michael, Dr RESIGNED | Director | 03 Apr 1998 | 17 Oct 2003 | | June 1925 | 4 Overton Drive, London, E11 2NJ |
| LAXTON, Arthur Henry, Doctor RESIGNED | Director | | 18 Oct 2002 | | July 1924 | 9 Elfin Court, 29 Westwood Road, Southampton, Hampshire, SO17 1DY |
| LEARY, Jack, Dr RESIGNED | Director | 28 May 1996 | 17 Oct 2003 | | April 1921 | 295 Skircoat Green Road, Halifax, West Yorkshire, HX3 0LQ |
| LEITH, Ian, Dr RESIGNED | Director | 03 Oct 1997 | 01 Mar 1999 | | July 1945 | 15 Saxon Way, Woodbridge, Suffolk, IP12 1LG |
| MACDONALD, Roderic Sinclair, Dr RESIGNED | Director | | 05 Mar 1996 | | January 1943 | 106 Wellesley Road, Chiswick, London, W4 3AP |
| MANN, Nick, Dr RESIGNED | Director | 27 Jul 2019 | 25 Jun 2022 | England | August 1962 | 8-10 Boston Place, London, NW1 6QH |
| MILLAR, Joyce Margaret, Dr RESIGNED | Director | 04 Oct 1996 | 30 Oct 2006 | | June 1925 | 116 Harley Street, London, W1N 1AG |
| MONK, Michael Charles, Dr RESIGNED | Director | 13 Oct 2007 | 23 Sep 2018 | England | September 1944 | 35 London Road, Copford, Essex, CO6 1LG |
| NEAVES, Judith, Dr RESIGNED | Director | 14 Oct 2016 | 07 Feb 2018 | England | November 1959 | 8-10 Boston Place, London, NW1 6QH |
| NEAVES, Judith, Dr RESIGNED | Director | 10 Sep 2016 | 07 Feb 2018 | England | November 1959 | 8, Boston Place, London, NW1 6QH, England |
| O'SULLIVAN, Julia Charlotte RESIGNED | Director | 21 Oct 2020 | 19 Oct 2022 | England | December 1956 | 8-10 Boston Place, London, NW1 6QH |
| PARSONS, Christopher John, Dr RESIGNED | Director | 17 Oct 2003 | 01 Nov 2013 | England | March 1948 | The Meeting House, New Road, Flaxley, Gloucestershire, GL14 1JS |
| PARSONS, Christopher John, Dr RESIGNED | Director | | 05 Mar 1996 | | March 1948 | 2 Wellington Villas, Ruddle, Newnham, Gloucestershire, GL14 1DU |
| PATTINSON, Brian, Dr RESIGNED | Director | | 17 Oct 2003 | | January 1937 | 39 Clarelawn Avenue, London, SW14 8BE |
| PAYNE, Teresa Mary RESIGNED | Director | 25 Aug 2021 | 13 Sep 2022 | England | May 1960 | 8-10 Boston Place, London, NW1 6QH |
| PETERS, Theodore William, Dr RESIGNED | Director | 01 Oct 1999 | 07 Jul 2017 | United Kingdom | May 1948 | 100 Fitzalan Road, Arundel, West Sussex, BN18 9JY |
| ROBERTSON, Garth, Dr RESIGNED | Director | 06 Jul 2018 | 09 Feb 2022 | England | August 1947 | 8-10 Boston Place, London, NW1 6QH |
| ROBERTSON, Garth Dundas, Dr RESIGNED | Director | | 05 Mar 1996 | | August 1947 | 7 Masbro Road, London, W14 0LX |
| SIMONE, John Joseph Lawrence, Doctor RESIGNED | Director | 08 Oct 1993 | 06 Oct 1995 | | September 1949 | 15 Milnthorpe Road, Chiswick, London, W4 3DX |
| TESTER, Kim Alison RESIGNED | Director | 25 Aug 2021 | 19 Oct 2022 | Wales | February 1961 | 8-10 Boston Place, London, NW1 6QH |
| THWAITES, Ian Guy, Dr RESIGNED | Director | 08 Oct 1993 | 04 Jul 2013 | England | March 1943 | Marlhurst, Southwater, Horsham, West Sussex, RH13 7BY |
| THWAITES, Louise, Doctor RESIGNED | Director | 13 Oct 2007 | 04 Jul 2013 | England | November 1971 | Marlhurst, Marlpost Road, Horsham, West Sussex, RH13 9BY |
| WILKIN, Peter Michael Rowan, Dr RESIGNED | Director | 08 Oct 1993 | 05 Mar 1996 | | September 1949 | 43 Charmouth Court, Charmouth Road, St Albans, Hertfordshire, AL1 4SJ |
| WILLIAMS, Mark Pryce RESIGNED | Director | 21 Oct 2020 | 27 Jul 2022 | Wales | November 1970 | 8-10 Boston Place, London, NW1 6QH |