| CROSS, Elizabeth ACTIVE | Director | 31 May 2011 | | United States | April 1958 | Princes Manor Barn, Reading Road, Harwell, Didcot, Oxfordshire, OX11 0LU, England |
| HAGEN, Alexander Victor ACTIVE | Director | 18 Nov 2013 | | England | May 1965 | Princes Manor Barn, Reading Road, Harwell, Didcot, Oxfordshire, OX11 0LU, England |
| INGLIS, Moray Thomas Marshall ACTIVE | Director | 06 Sep 2021 | | England | August 1974 | Princes Manor Barn, Reading Road, Harwell, Didcot, Oxfordshire, OX11 0LU, England |
| LEVY, Todd Alan ACTIVE | Director | 31 May 2011 | | United States | September 1960 | Princes Manor Barn, Reading Road, Harwell, Didcot, Oxfordshire, OX11 0LU, England |
| ANDREWS, Alison Elizabeth RESIGNED | Secretary | 08 Sep 2015 | 28 Apr 2017 | | | Princes Manor Barn, Reading Road, Harwell, Didcot, Oxfordshire, OX11 0LU, England |
| BELL, George Angus Laird RESIGNED | Secretary | 18 Feb 1999 | 30 Sep 2009 | | | Beech House, 150 Station Road Dullingham, Newmarket, CB8 9UT |
| DUFF, Philip Andrew RESIGNED | Secretary | | 01 Aug 1995 | | | Little Ragnell, Faringdon, Oxfordshire, SN7 8JP |
| HOWARD, Crispian Michael Pitt RESIGNED | Secretary | 30 Sep 2009 | 08 Sep 2015 | | | 69, Burrell Road, Compton, Newbury, Berkshire, RG20 6QX |
| PERKINS, John RESIGNED | Secretary | 01 May 1996 | 18 Feb 1999 | | | Daniels House, Stype, Hungerford, RG17 0RL |
| WILKINSON, Nigel Geoffrey RESIGNED | Secretary | 01 Aug 1995 | 01 May 1996 | | | 18 Chestnut Avenue, Faringdon, Oxfordshire, SN7 8BB |
| ANDREWS, Alison Elizabeth RESIGNED | Director | 01 Aug 2015 | 28 Apr 2017 | England | October 1967 | Princes Manor Barn, Reading Road, Harwell, Didcot, Oxfordshire, OX11 0LU, England |
| BEMBRIDGE, Duncan Philip RESIGNED | Director | 01 Aug 2013 | 21 Oct 2016 | United Kingdom | October 1960 | 14, Rectory Close, Rectory Close Sutton Bonington, Loughborough, Leicestershire, LE12 5PJ, England |
| BLACKIE, Henry Christopher RESIGNED | Director | | 01 Sep 2000 | United Kingdom | July 1942 | Water Hall, Debden, Saffron Walden, Essex, CB11 3LS |
| DUFF, Philip Andrew RESIGNED | Director | | 31 Aug 2013 | England | December 1952 | Little Ragnell, Faringdon, Oxfordshire, SN7 8JP |
| FISHER, Dona Yvette RESIGNED | Director | 31 May 2011 | 14 Apr 2015 | Usa | November 1953 | Unit 1, Radcot Estate, Park Road, Faringdon, Oxon, SN7 8LA, England |
| GRAY, Andrew David RESIGNED | Director | 01 Feb 2011 | 12 Feb 2016 | United Kingdom | March 1969 | Unit 1, Radcot Estate, Park Road, Faringdon, Oxon, SN7 8LA, England |
| HOGAN, Nicola Helen RESIGNED | Director | 10 May 2016 | 30 Apr 2018 | England | May 1965 | Princes Manor Barn, Reading Road, Harwell, Didcot, Oxfordshire, OX11 0LU, England |
| HOWARD, Crispian Michael Pitt RESIGNED | Director | 01 Feb 2007 | 08 Sep 2015 | England | March 1962 | 69 Burrell Road, Compton, Newbury, Berkshire, RG20 6QX |
| JACOBS, Simon David RESIGNED | Director | 01 Oct 1994 | 08 Jan 2010 | United Kingdom | August 1963 | The Grange 145 High Street, Worton, Devizes, Wiltshire, SN10 5SE |
| PERKINS, John RESIGNED | Director | 01 May 1996 | 18 Feb 1999 | | | Daniels House, Stype, Hungerford, RG17 0RL |
| POWELL, Simon Edward Meredith RESIGNED | Director | 24 Aug 2000 | 06 Nov 2002 | United Kingdom | August 1953 | 51 Somerset Road, London, SW19 5HT |
| SMITH, Simon Mark RESIGNED | Director | 01 Jan 2006 | 31 Aug 2006 | England | April 1966 | 43 Brunstock Beck, Didcot, Oxfordshire, OX11 7YG |
| THOMPSON, Ian Manson RESIGNED | Director | 24 Aug 2000 | 06 Nov 2002 | England | August 1951 | Glebe Cottage, Brimpton, Newbury, Berkshire, RG7 4TG |
| WILLEMITE, Katherine Elizabeth RESIGNED | Director | 04 Sep 2017 | 31 Dec 2020 | England | May 1977 | Princes Manor Barn, Reading Road, Harwell, Didcot, Oxfordshire, OX11 0LU, England |