| BRAGG, Caroline ACTIVE | Director | 19 Jul 2024 | | England | October 1987 | 10, Dean Farrar Street, London, SW1H 0DX, England |
| CALVERT, Ian Robert RESIGNED | Secretary | 30 Oct 2020 | 10 Mar 2022 | | | 10, Dean Farrar Street, London, SW1H 0DX, England |
| WADE, Joanne, Dr RESIGNED | Secretary | 02 Feb 2015 | 30 Oct 2020 | | | 10, Dean Farrar Street, London, SW1H 0DX, England |
| WARREN, Andrew James RESIGNED | Secretary | | 01 Feb 2015 | | | 65 Glisson Road, Cambridge, Cambridgeshire, CB1 2HG |
| ADSETTS, William Norman, Sir RESIGNED | Director | 30 Jun 1993 | 29 Jun 1995 | | April 1931 | 28 Endcliffe Hall Avenue, Sheffield, South Yorkshire, S10 3EL |
| ADSETTS, William Norman, Sir RESIGNED | Director | | 01 Jul 1992 | | April 1931 | 28 Endcliffe Hall Avenue, Sheffield, South Yorkshire, S10 3EL |
| ALDWORTH, Robin Clive RESIGNED | Director | | 01 Jul 1992 | | April 1935 | Lincoln Road, Enfield, Middx, EN1 1SB |
| ANDREWS, Mark Glen RESIGNED | Director | 01 Jul 2008 | 14 Jan 2010 | United Kingdom | July 1969 | 1 Manor Court, Breedon On The Hill, Derbyshire, DE73 8FW |
| ATKINSON, Brian Martin RESIGNED | Director | | 01 Jul 1992 | | December 1941 | 55 Hayes Hill, Hayes, Bromley, Kent, BR2 7HN |
| BELTON, Michael Stewart RESIGNED | Director | | 30 Jun 1993 | | October 1944 | Langdale House, York Road, Malton, North Yorkshire, YO17 0AX |
| BURNELL, Philip John RESIGNED | Director | | 01 Jul 1992 | | June 1945 | 37 Manchester Road, Knutsford, Cheshire, WA16 0LY |
| CALVERT, Ian Robert RESIGNED | Director | 28 Jul 2020 | 10 Mar 2022 | England | March 1965 | 10, Dean Farrar Street, London, SW1H 0DX, England |
| CORNES, Frederick Edward RESIGNED | Director | | 01 Jul 1992 | | June 1939 | 4 Old Frensham Road, Lower Bourne, Farnham, Surrey, GU10 3PU |
| DAVIES, John Graham RESIGNED | Director | | 01 Jul 1992 | | November 1947 | Woodcroft 117 Nash Grove Lane, Wokingham, Berkshire, RG11 4HG |
| FAIRLEY, Donald Grant RESIGNED | Director | 02 Jul 1997 | 02 Jul 1997 | | July 1942 | Cannon Cottage Crown Lane, Old Basing, Basingstoke, Hampshire, RG24 7DN |
| FORRESTER, William Wilson RESIGNED | Director | | 01 Jul 1992 | England | July 1940 | Coombs Hay, 16 Burre Close, Bakewell, Derbyshire, DE45 1GD |
| FRENCHAM, Lily Jade RESIGNED | Director | 10 Mar 2022 | 19 Jul 2024 | England | March 1988 | 10, Dean Farrar Street, London, SW1H 0DX, England |
| HAAR, Preben RESIGNED | Director | | 01 Jul 1992 | | June 1938 | Evertvej 24, 4040 Jyllinge, Denmark |
| HAVARD, Alan David, Dr RESIGNED | Director | | 30 Jun 1994 | England | May 1940 | 78 Trafalgar Road, Southport, Merseyside, PR8 2NJ |
| JONES, Emma Claire RESIGNED | Director | 10 Jul 2017 | 30 Oct 2020 | England | April 1970 | 5, Carver Road, London, SE24 9LS, England |
| JONES, Keith Harold Davenport RESIGNED | Director | 16 Jan 2014 | 08 Jul 2015 | England | December 1948 | Westgate House, 2a Prebend Street, London, N1 8PT |
| KAUFMAN, Raymond Ernest RESIGNED | Director | | 01 Jul 1992 | | September 1937 | Hy Juniper Long Lane, Shaw, Newbury, Berkshire, RG16 9LJ |
| KIRBY, Roger Ian RESIGNED | Director | | 30 Jun 1993 | | March 1953 | 30 East Beach, Lytham St Annes, Lancashire, FY8 5EX |
| LEIGHTON, Peter Crocker RESIGNED | Director | 29 Jun 1995 | 02 Jul 1997 | | May 1936 | Brandon House Otford Lane, Halstead, Sevenoaks, Kent, TN14 7EF |
| LEIGHTON, Peter Crocker RESIGNED | Director | | 01 Jul 1992 | | May 1936 | Brandon House Otford Lane, Halstead, Sevenoaks, Kent, TN14 7EF |
| MALLABURN, Peter Stuart, Dr RESIGNED | Director | 10 Jul 2017 | 27 Mar 2020 | England | December 1958 | Ucl Energy Institute, Central House, 14 Upper Woburn Place, London, WC1H 0NN, England |
| MCKERRACHER, Iain Douglas RESIGNED | Director | | 01 Jul 1992 | United Kingdom | September 1950 | 13a Kent Road, Harrogate, North Yorkshire, HG1 2LE |
| MCLEOD, Alexander John RESIGNED | Director | 29 Jun 2010 | 16 Jan 2014 | England | April 1965 | Westgate House, 2a Prebend Street, London, N1 8PT |
| MILLS, Rachael Louise RESIGNED | Director | 10 Jul 2017 | 30 Oct 2020 | England | April 1973 | 61, Welbeck Avenue, Tunbridge Wells, TN4 9BD, England |
| PELLEGRINI, Massimo RESIGNED | Director | | 01 Jul 1992 | | August 1942 | 8 Palace Gate, Kensington, London, W8 5NF |
| POTTER, James Gerrard RESIGNED | Director | | 30 Jun 1993 | United Kingdom | March 1944 | 42 High Street, Balsham, Cambridge, Cambridgeshire, CB1 6EP |
| ROBERTS, Brian Vivian RESIGNED | Director | 25 Jun 2002 | 27 Jun 2006 | Wales | August 1951 | 5 Tyddyn Gwaun, Laleston, Bridgend, Bridgend County Borough, CF32 0LN |
| ROBSON, David Fairfax RESIGNED | Director | 08 Jul 2015 | 30 Oct 2020 | England | November 1978 | 10, Dean Farrar Street, London, SW1H 0DX, England |
| ROBSON, Jeremy John Fairfax RESIGNED | Director | 23 Jun 2004 | 01 Jul 2008 | England | August 1949 | Shepherds Cottage, Hazeley Lea, Hartley Wintney, Hampshire, RG27 8ND |
| SCHOFIELD, Neil Lawrence RESIGNED | Director | 27 Jun 2006 | 29 Jun 2010 | United Kingdom | January 1957 | 11 Albany Terrace, Worcester, Worcestershire, WR1 3DU |
| TINSON, Richard RESIGNED | Director | | 01 Jul 1992 | United Kingdom | November 1933 | Coachmans Cottage, High Street Ripley, Woking, Surrey, GU23 6BE |
| TRILLING, Matthew Elias RESIGNED | Director | | 01 Jul 1992 | | August 1948 | Meerbrook, Alan Drive, Hale, Cheshire, WA15 0LR |
| VINT, Michael John RESIGNED | Director | | 01 Jul 1992 | United Kingdom | October 1942 | 9 Beech Ride, Fleet, Hampshire, GU13 9XQ |
| WALSH, Kneale Patrick RESIGNED | Director | | 01 Jul 1992 | | March 1936 | 17 Claremont Avenue, Chorley, Lancashire, PR7 2HL |
| WILBERFORCE, Robert Richard RESIGNED | Director | 27 Jun 2000 | 23 Jun 2004 | | May 1948 | 48 Rolleston Drive, Wallasey, Merseyside, CH45 6XF |
| WITHERS, Paul Nigel, Dr RESIGNED | Director | 02 Jul 1997 | 27 Jun 2000 | United Kingdom | June 1956 | Old Whitehill Barn, Old Whitehill, Tackley, Kidlington, Oxfordshire, OX5 3AB |