| BRETT, Jonathan ACTIVE | Director | 27 Jan 2023 | | England | August 1979 | Harston Mill, Royston Road, Harston, Cambridge, CB22 7GG, England |
| COLE, Sarah Elizabeth ACTIVE | Director | 27 Jan 2023 | | England | July 1979 | Harston Mill, Royston Road, Harston, Cambridge, CB22 7GG, England |
| BANNER, Paul Lancelot RESIGNED | Secretary | 07 Oct 1998 | 01 Nov 2000 | | | Cherry Trees, 43 Meadway, Esher, Surrey, KT10 9HG |
| CRAWFORD, Mark Stephen RESIGNED | Secretary | 06 Nov 2009 | 06 Jun 2011 | | | Brunel Science Park, Kingston Lane, Uxbridge, Middlesex, UB8 3PQ |
| DAVENHILL, Michael Frederick RESIGNED | Secretary | 29 Jan 1996 | 07 Oct 1998 | | | Flat 31 79 Gloucester Street, London, SW1V 4EA |
| HARROW, Stephen Giles RESIGNED | Secretary | 06 Jun 2011 | 31 Dec 2012 | | | Technology Centre, 683-685 Stirling Road, Slough, Berkshire, SL1 4ST, United Kingdom |
| HEWLETT, Anthony Michael RESIGNED | Secretary | 08 Dec 2000 | 12 Nov 2001 | | | Camperdown, Sycamore Road, Amersham, Buckinghamshire, HP6 6BB |
| IVINGS, Thomas Edwin RESIGNED | Secretary | 09 Feb 2006 | 08 Apr 2008 | | | 58 Manor Road, Woodstock, Oxfordshire, OX20 1XJ |
| MACPHERSON, Claire Louise RESIGNED | Secretary | 01 Feb 2015 | 01 May 2022 | | | Cale House, Station Road, Wincanton, BA9 9FE, England |
| MILES, Roberta Caroline RESIGNED | Secretary | 23 Dec 2001 | 30 Sep 2005 | | | 11 Woodlands, Chesterton, Bicester, Oxfordshire, OX26 1TN |
| NEWELL, Philip RESIGNED | Secretary | 08 Apr 2008 | 05 Nov 2009 | | | 24 Hill Rise, Chalfont St Peter, Gerrards Cross, Buckinghamshire, SL9 9BH |
| WEBB, Michael John RESIGNED | Secretary | 28 Feb 2013 | 01 Feb 2015 | | | Technology Centre, 683-685 Stirling Road, Slough, Berkshire, SL1 4ST, United Kingdom |
| TEMPLES (NOMINEES) LIMITED RESIGNED | Nominee Secretary | 25 Sep 1995 | 29 Jan 1996 | | | 152 City Road, London, EC1V 2NX |
| CARTER, Jonathan Philip RESIGNED | Director | 22 Jul 2013 | 01 Sep 2014 | England | November 1965 | Technology Centre, 683-685 Stirling Road, Slough, Berkshire, SL1 4ST, United Kingdom |
| CARTMELL, Philip RESIGNED | Director | 01 Feb 2016 | 21 Jun 2016 | England | May 1951 | A2/1064, Cody Technology Park, Old Ively Road, Farnborough, Hampshire, GU14 0LX |
| CRAWFORD, Mark Stephen RESIGNED | Director | 06 Nov 2009 | 01 Feb 2016 | England | May 1967 | A2/1064, Cody Technology Park, Old Ively Road, Farnborough, Hampshire, GU14 0LX, England |
| DAVENHILL, Michael Frederick RESIGNED | Director | 29 Jan 1996 | 07 Oct 1998 | United Kingdom | January 1941 | Flat 31 79 Gloucester Street, London, SW1V 4EA |
| GOZDAWA, Richard Julius RESIGNED | Director | 29 Jan 1996 | 23 Dec 2001 | England | July 1948 | 14 Devonway, Hillingdon, Middlesex, UB10 0JS |
| HARROW, Stephen Giles RESIGNED | Director | 18 Apr 2012 | 31 Dec 2012 | United Kingdom | November 1972 | Technology Centre, 683-685 Stirling Road, Slough, Berkshire, SL1 4ST, United Kingdom |
| KINGS, Simon John Nicholson RESIGNED | Director | 21 Jun 2016 | 20 Jun 2018 | England | May 1963 | A2/1064, Cody Technology Park, Old Ively Road, Farnborough, Hampshire, GU14 0LX |
| MACPHERSON, Claire Louise RESIGNED | Director | 20 Jun 2018 | 10 Oct 2021 | England | February 1973 | Cale House, Station Road, Wincanton, BA9 9FE, England |
| MUSGRAVE, Gerald, Professor RESIGNED | Director | 04 May 1999 | 24 Jun 2010 | United Kingdom | August 1942 | Camp Keep, Camp Road, Gerrards Cross, Buckinghamshire, SL9 7PB |
| NEWELL, Philip RESIGNED | Director | 08 Apr 2008 | 05 Nov 2009 | England | July 1958 | 24 Hill Rise, Chalfont St Peter, Gerrards Cross, Buckinghamshire, SL9 9BH |
| REED, Julian Oliver RESIGNED | Director | 23 Dec 2001 | 14 Oct 2011 | United Kingdom | June 1962 | Fircones, Midhurst Road, Haslemere, Surrey, GU27 3DH |
| STROUD, Derren Mark RESIGNED | Director | 01 Mar 2016 | 31 May 2023 | England | March 1970 | Cale House, Station Road, Wincanton, BA9 9FE, England |
| TEMPLES (PROFESSIONAL SERVICES) LIMITED RESIGNED | Nominee Director | 25 Sep 1995 | 29 Jan 1996 | | | 152 City Road, London, EC1V 2NX |