| KEARSLEY, Andrew John, Dr ACTIVE | Director | | | England | April 1954 | 43 Southend, Garsington, Oxford, Oxfordshire, OX44 9DJ |
| KNOWLES, Martyn Richard Huw, Dr ACTIVE | Director | 31 Oct 2001 | | England | January 1966 | Unit 8 Moorbrook Park, Didcot, Oxford, Oxfordshire, OX11 7HP |
| RICHARDSON, Steven ACTIVE | Director | 26 May 2022 | | England | February 1972 | Unit 8 Moorbrook Park, Didcot, Oxford, Oxfordshire, OX11 7HP |
| STOKES, Christopher John ACTIVE | Director | 01 Jul 2024 | | England | February 1972 | Unit 8 Moorbrook Park, Didcot, Oxford, Oxfordshire, OX11 7HP |
| WEBB, Colin Edward, Professor ACTIVE | Director | | | England | December 1937 | Willow Court, School Lane, Chilsworthy, Holsworthy, Devon, EX22 7BQ |
| SURTEK LTD ACTIVE | Director | 22 Jun 2012 | | | | Vaux D'Amende, Rue Des Pointes, St. Pierre Du Bois, St Peters, GY7 9BR, Guernsey |
| BAKER, John Frederick, Dr RESIGNED | Secretary | 03 Jan 2006 | 01 Jan 2008 | | | 22 Cherry Hill Road, Barnt Green, Birmingham, West Midlands, B45 8LJ |
| DEECH, John Stewart, Dr RESIGNED | Secretary | | 27 Jul 1998 | | | Ox2 |
| EVANS, Anthony John Pearsall RESIGNED | Secretary | 06 Oct 2001 | 03 Jan 2006 | | | 13 East Street, Oxford, Oxfordshire, OX2 0AU |
| KEARSLEY, Andrew John, Dr RESIGNED | Secretary | 01 Jan 2008 | 03 Jan 2023 | | | 43 Southend, Garsington, Oxford, Oxfordshire, OX44 9DJ |
| KEARSLEY, Andrew John, Dr RESIGNED | Secretary | 07 Oct 1998 | 11 Mar 1999 | | | 8 The Green, Garsington, Oxford, Oxfordshire, OX44 9DP |
| MORTON, Richard Anthony RESIGNED | Secretary | 03 Jan 2023 | 02 Feb 2026 | | | Unit 8 Moorbrook Park, Didcot, Oxford, Oxfordshire, OX11 7HP |
| WOODS, Simon Alasdair RESIGNED | Secretary | 11 Mar 1999 | 05 Oct 2001 | | | 3 Dairy Meadow, Garford, Abingdon, Oxfordshire, OX13 5PH |
| BAKER, John Frederick, Dr RESIGNED | Director | 03 Jan 2006 | 31 Mar 2023 | England | May 1948 | 22 Cherry Hill Road, Barnt Green, Birmingham, West Midlands, B45 8LJ |
| BAKER, Philip Carl RESIGNED | Director | 01 Sep 1999 | 04 Feb 2000 | | April 1948 | Cherry Tree House, Paddock Field Monk Sherborne, Tadley, Hampshire, RG26 5LD |
| CLARKE, Christopher David RESIGNED | Director | 01 Apr 1993 | 30 Apr 2007 | England | March 1954 | 22 Pipits Croft, Bicester, Oxfordshire, OX26 6XW |
| COLLINS, Melvyn RESIGNED | Director | 30 Jul 2018 | 09 Jun 2025 | England | February 1960 | Unit 8 Moorbrook Park, Didcot, Oxford, Oxfordshire, OX11 7HP |
| CORNEY, Alan, Dr RESIGNED | Director | | 31 Mar 1993 | | July 1939 | 15 Harberton Mead, Headington, Oxford, Oxfordshire, OX3 0DB |
| DEECH, John Stewart, Dr RESIGNED | Director | | 27 Jul 1998 | United Kingdom | July 1943 | Ox2 |
| ERREY, Keith Harrold RESIGNED | Director | | 27 Jul 1998 | | May 1950 | 67 Straftford Street, Oxford, Oxfordshire, OX4 1XR |
| FERGUSON, Alan Howard, Dr RESIGNED | Director | 01 Sep 2004 | 31 Mar 2023 | United Kingdom | January 1961 | OX7 |
| GILES, Barrington RESIGNED | Director | | 27 Jun 1995 | United Kingdom | May 1947 | 4 Saint Andrews Lane, Headington, Oxford, Oxfordshire, OX3 9DP |
| HOGAN, Daniel Christopher RESIGNED | Director | | 01 Sep 1993 | | August 1955 | 23 John Swift Road, Acton, Massachusetts 01720, FOREIGN, Usa |
| LITCHFIELD, Brian John RESIGNED | Director | 01 Oct 1996 | 27 Jul 1998 | | April 1942 | Round Down Farm, Cole Kitchen Lane, Gomshall, Surrey, GU5 9QB |
| LUCAS, Richard William RESIGNED | Director | 22 May 2001 | 13 Aug 2001 | England | December 1957 | 14 Landford Gardens, Bournemouth, Dorset, BH8 0PH |
| MORRIS, Richard John RESIGNED | Director | 08 Jul 2019 | 25 Feb 2022 | England | January 1975 | Unit 8 Moorbrook Park, Didcot, Oxford, Oxfordshire, OX11 7HP |
| MORTON, Richard Anthony RESIGNED | Director | 01 Jul 2024 | 02 Feb 2026 | England | January 1971 | Unit 8 Moorbrook Park, Didcot, Oxford, Oxfordshire, OX11 7HP |
| POWELL, Nigel David RESIGNED | Director | 27 Jun 1995 | 02 Oct 1998 | | July 1961 | 49 Bladon Road, Bladon, Woodstock, Oxfordshire, OX20 1QD |
| THOMAS, Paul Henry Brace RESIGNED | Director | 15 Apr 1994 | 30 Sep 1996 | United Kingdom | July 1961 | Yew Tree Cottage, Grub Street, Limpsfield, Surrey, RH8 0SH |
| WEBB, Andrew Graham RESIGNED | Director | 26 Aug 2004 | 11 Sep 2006 | | April 1967 | 97 Long Hill Road, Groton Ma, 01450, Usa |
| WHYBREW, Adam, Dr RESIGNED | Director | 02 Dec 2002 | 30 Nov 2003 | | September 1970 | 397 Barkly Street, Brunswick, Victoria, 3056, Australia |
| WOODS, Simon Alasdair RESIGNED | Director | 11 Mar 1999 | 05 Oct 2001 | England | September 1969 | 3 Dairy Meadow, Garford, Abingdon, Oxfordshire, OX13 5PH |
| SURTEK LIMITED RESIGNED | Director | 27 Jul 1998 | 31 Oct 2006 | | | 28 York Way, Fort George St Peter Port, Guernsey, GY1 2SY |