| ADMASU, Kate Patricia ACTIVE | Director | 29 Apr 2024 | | United Kingdom | May 1981 | Suffolk House, Suffolk Road, Cheltenham, GL50 2ED, England |
| ASHMAN, Matthew Peter ACTIVE | Director | 01 Jan 2025 | | United Kingdom | April 1979 | Suffolk House, Suffolk Road, Cheltenham, GL50 2ED, England |
| DE IONGH, Nicola Hermine ACTIVE | Director | 24 May 2026 | | England | October 1970 | Suffolk House, Suffolk Road, Cheltenham, GL50 2ED, England |
| WHALLEY, Susanna Mai ACTIVE | Director | 02 Oct 2023 | | England | June 1975 | Suffolk House, Suffolk Road, Cheltenham, GL50 2ED, England |
| WINTER, Catherine Ann ACTIVE | Director | 01 Jan 2025 | | United Kingdom | November 1968 | Suffolk House, Suffolk Road, Cheltenham, GL50 2ED, England |
| KING, Roger Patrick, Professor RESIGNED | Secretary | 28 Sep 2006 | 01 Jun 2010 | | | Telham Lodge, Telham Lane Battle, East Sussex, TN33 0SN |
| OAKLEY, Philip Abercrombie RESIGNED | Secretary | | 05 Jun 1998 | | | Dry Knapps Farm, Edge Lane, Painswick, Glos, GL6 6UW |
| SMITH, Roger William RESIGNED | Secretary | 01 Jun 2010 | 12 Jan 2018 | | | Suffolk House, Suffolk Road, Cheltenham, GL50 2ED, England |
| THOMAS, David Russell Francis RESIGNED | Secretary | 22 Sep 2003 | 28 Sep 2006 | | | Flat 2, 70 Great Russell Street, London, WC1B 3BN |
| WALTON, Katharine RESIGNED | Secretary | 13 Jun 2000 | 06 Aug 2003 | | | 76 Painswick Road, Cheltenham, Gloucestershire, GL50 2EU |
| WEST, Christopher Sigmund RESIGNED | Secretary | 05 Jun 1998 | 05 Nov 1999 | | | 12 Eldorado Road, Cheltenham, Gloucestershire, GL50 2PT |
| WILLIAMS, John Nicholas RESIGNED | Secretary | 21 May 2018 | 31 Mar 2023 | | | Suffolk House, Suffolk Road, Cheltenham, GL50 2ED, England |
| BAI-YUN, Cloud, Dr RESIGNED | Director | 23 Mar 2006 | 04 Apr 2022 | England | February 1966 | 2 Malvern Priors, Malvern Place, Cheltenham, Gloucestershire, GL50 2JL |
| BEWICK, Thomas Darren, Professor RESIGNED | Director | 02 Oct 2023 | 01 Mar 2024 | United Kingdom | February 1971 | Suffolk House, Suffolk Road, Cheltenham, GL50 2ED, England |
| BOOTH, Clive, Sir RESIGNED | Director | 26 Nov 1997 | 04 Jul 2003 | United Kingdom | April 1943 | 43 Saint John Street, Oxford, OX1 2LH |
| BRIDGEWATER, Adrian Alexander RESIGNED | Director | | 25 May 2010 | England | July 1936 | Manor Farm, High Street, Great Eversden, Cambridgeshire, CB3 7HW |
| CARTWRIGHT, Michael John RESIGNED | Director | 15 Oct 2014 | 30 Sep 2023 | United Kingdom | April 1956 | Suffolk House, Suffolk Road, Cheltenham, GL50 2ED, England |
| CHAPMAN, Penelope Claire RESIGNED | Director | 18 Dec 2013 | 28 Jan 2014 | England | September 1967 | Oriel House, Oriel Road, Cheltenham, Gloucestershire, GL50 1XP |
| COLLINS, Michael Geoffrey, Dr RESIGNED | Director | | 10 Mar 1993 | United Kingdom | June 1952 | Three Oaks, 7 Manor Park Drive, Westoning, Bedfordshire, MK45 5LS |
| EVERETT, Nicholas Timothy RESIGNED | Director | 01 Mar 2021 | 03 Oct 2023 | England | June 1976 | Suffolk House, Suffolk Road, Cheltenham, GL50 2ED, England |
| HELDMAN, Craig Stanton RESIGNED | Director | 12 Sep 2008 | 28 Jan 2014 | Usa | August 1966 | 9317, East Kemper, Cincinnati, Ohio Oh 45241, Usa |
| HIGGINS, Michael Anthony, Doctor RESIGNED | Director | | 17 Nov 1998 | | June 1944 | The Red House, Grange Park Thurnby, Leicester, Leicestershire, LE7 9QQ |
| JONES, Gordon RESIGNED | Director | | 15 Jun 1993 | United Kingdom | March 1943 | 25 Wiltshire Drive, Wokingham, Berkshire, RG40 1TQ |
| LETCHER, Christopher John RESIGNED | Director | 26 Nov 1997 | 15 Sep 2008 | | May 1960 | 12 Cumberland Mews, Tunbridge Wells, Kent, TN1 1TU |
| MATHEWS, Clare RESIGNED | Director | 01 Mar 2021 | 10 Oct 2023 | England | July 1968 | Suffolk House, Suffolk Road, Cheltenham, GL50 2ED, England |
| METHENY, Leonard RESIGNED | Director | 15 Sep 2008 | 23 Oct 2009 | | April 1968 | 44, Crediton Hill, London, NW6 1HR |
| MILLER, Kenneth Allan Glen, Dr RESIGNED | Director | | 28 Mar 1996 | United Kingdom | July 1926 | 66 Trematon Place, Teddington, Middlesex, TW11 9RH |
| MORGAN, Martin William Howard RESIGNED | Director | 17 Nov 1992 | 26 Nov 1997 | | February 1950 | 8 Hills Avenue, Cambridge, CB1 4XA |
| NORRIS, Paul William Wheeler RESIGNED | Director | 28 Jan 2014 | 08 Oct 2023 | England | July 1975 | Suffolk House, Suffolk Road, Cheltenham, GL50 2ED, England |
| OAKLEY, Philip Abercrombie RESIGNED | Director | | 05 Jun 1998 | | July 1933 | Dry Knapps Farm, Edge Lane, Painswick, Glos, GL6 6UW |
| PERRY, Adrian RESIGNED | Director | 18 Dec 2013 | 28 Jan 2014 | United Kingdom | April 1959 | Oriel House, Oriel Road, Cheltenham, Gloucestershire, GL50 1XP |
| PRYCE, Adrian Howard RESIGNED | Director | 02 Oct 2023 | 30 Sep 2024 | United Kingdom | August 1958 | Suffolk House, Suffolk Road, Cheltenham, GL50 2ED, England |
| ROGERS, Louise Ann RESIGNED | Director | 03 Mar 2006 | 01 Apr 2008 | United Kingdom | January 1964 | 2 Buxton Road, Brighton, East Sussex, BN1 5DE |
| ROGERS, Thomas Gordon Parry RESIGNED | Director | | 26 Nov 1997 | | August 1924 | St Edwards Chantry, Bimport, Shaftesbury, Dorset, SP7 8BA |
| RUSSELL, Eve Suzanne RESIGNED | Director | 02 Oct 2023 | 19 Sep 2024 | England | December 1977 | Suffolk House, Suffolk Road, Cheltenham, GL50 2ED, England |
| SMITH, Roger William RESIGNED | Director | 28 Jan 2014 | 12 Jan 2018 | England | September 1947 | Suffolk House, Suffolk Road, Cheltenham, GL50 2ED, England |
| STEPHENS, Christopher RESIGNED | Director | 18 Oct 2022 | 04 Oct 2023 | England | November 1963 | Suffolk House, Suffolk Road, Cheltenham, GL50 2ED, England |
| WALL, Robert William Cameron RESIGNED | Director | 28 Jan 2014 | 04 Aug 2017 | England | November 1963 | Suffolk House, Suffolk Road, Cheltenham, GL50 2ED, England |
| WEBSTER, Adam Bjorn RESIGNED | Director | 12 Sep 2008 | 29 Jun 2012 | United Kingdom | April 1973 | 32, Milton Road, Harpenden, Hertfordshire, AL5 5LS, United Kingdom |
| WEST, Christopher Sigmund RESIGNED | Director | | 05 Nov 1999 | | December 1945 | 12 Eldorado Road, Cheltenham, Gloucestershire, GL50 2PT |
| WILLIS, Simon George Temple RESIGNED | Director | 18 Jun 1999 | 03 Mar 2006 | United Kingdom | September 1962 | 139 Broadhurst Gardens, London, NW6 3BJ |
| WILSON, Robert Allen RESIGNED | Director | 18 Dec 2013 | 28 Jan 2014 | Usa | March 1976 | Oriel House, Oriel Road, Cheltenham, Gloucestershire, GL50 1XP |
| WITHEY, Richard RESIGNED | Director | 14 Sep 1993 | 18 Jun 1999 | | March 1950 | 1 The Hollow, Hartford, Huntingdon, Cambridgeshire, PE18 7YE |
| WOOD, Peter Martin RESIGNED | Director | 01 Mar 2021 | 04 Oct 2023 | England | October 1986 | Suffolk House, Suffolk Road, Cheltenham, GL50 2ED, England |