| PILSWORTH, Hannah Frances ACTIVE | Secretary | 06 Mar 2025 | | | | Wsp House, 70, Chancery Lane, London, WC2A 1AF, England |
| BARNARD, Miles Lawrence ACTIVE | Director | 15 Jul 2021 | | England | May 1966 | Wsp House, 70, Chancery Lane, London, WC2A 1AF, England |
| REILLY, Paul ACTIVE | Director | 16 Dec 2024 | | England | October 1965 | Wsp House, 70, Chancery Lane, London, WC2A 1AF, England |
| AL-DHAHIR, Zuhair, Dr RESIGNED | Secretary | | 14 Mar 1997 | | | 18 Highgrove Park, Maidenhead, Berkshire, SL6 7PQ |
| BARTON, George Michael RESIGNED | Secretary | 06 Jul 2005 | 18 Jun 2007 | | | The Orchards, York Road, Green Hammerton, North Yorkshire, YO26 8BN |
| COOPER, Elizabeth Jayne Glare RESIGNED | Secretary | 18 Jun 2007 | 31 Dec 2015 | | | Attenborough House, Browns Lane Business Park, Stanton-On-The-Wolds, Nottingham, NG12 5BL |
| HALL, David RESIGNED | Secretary | 14 Mar 1997 | 01 Apr 2002 | | | 2 Carter Avenue, Ratcliffe On Trent, Nottingham, Nottinghamshire, NG12 2GU |
| SEWELL, Karen Anne RESIGNED | Secretary | 15 Jul 2021 | 06 Mar 2025 | | | Wsp House, 70, Chancery Lane, London, WC2A 1AF, England |
| YOUNG, Michael Andrew RESIGNED | Secretary | 01 Apr 2002 | 06 Jul 2005 | | | Pippins, Pond Lane, Hermitage, Berkshire, RG18 9RN |
| AL-DHAHIR, Zuhair, Dr RESIGNED | Director | | 14 Mar 1997 | | August 1939 | 18 Highgrove Park, Maidenhead, Berkshire, SL6 7PQ |
| ANDREIS, Domenico RESIGNED | Director | 11 Jan 2010 | 03 Jun 2010 | Italy | March 1960 | Attenborough House, Browns Lane Business Park, Stanton-On-The-Wolds, Nottingham, NG12 5BL |
| BARTON, George Michael RESIGNED | Director | 06 Jul 2005 | 15 Jan 2009 | England | November 1951 | The Orchards, York Road, Green Hammerton, North Yorkshire, YO26 8BN |
| BEEN, Kenneth, Dr. RESIGNED | Director | 28 Jun 1996 | 03 Aug 2001 | | October 1953 | 11 Easthorpe View, Bottesford, Nottingham, Notts., NG13 0DL |
| BISHOP, Ian, Dr RESIGNED | Director | 20 May 2005 | 27 Feb 2008 | England | March 1962 | 16 Fir Cottage Road, Wokingham, Berkshire, RG40 4RY |
| BLACK, John Henry RESIGNED | Director | 28 Jun 1996 | 23 Dec 1999 | England | November 1949 | 24 Ludgate Drive, East Bridgford, Nottingham, Nottinghamshire, NG13 8NW |
| COPPING, Simon RESIGNED | Director | 13 Oct 2015 | 16 Dec 2021 | England | February 1968 | Attenborough House, Browns Lane Business Park, Stanton-On-The-Wolds, Nottingham, NG12 5BL |
| CROOKS, John Henry Archer, Dr RESIGNED | Director | 01 Nov 1991 | 18 Dec 1995 | | June 1947 | 4 Hutchings Road, Beaconsfield, Buckinghamshire, HP9 2BB |
| DRURY, David Michael RESIGNED | Director | 14 Oct 2005 | 01 Jan 2009 | | June 1969 | 31 Main Street, Sutton Bonington, Loughborough, Leicestershire, LE12 5ND |
| EVANS, Dyfed, Dr RESIGNED | Director | 21 Feb 2008 | 17 Dec 2008 | | October 1966 | 38, Finkle Hill, Sherburn In Elmet, Leeds, West Yorkshire, LS25 6EA, United Kingdom |
| EVANS, Dyfed, Dr RESIGNED | Director | 01 Apr 2002 | 16 Oct 2003 | | October 1966 | 9 Bedford Street, Oxford, Oxfordshire, OX4 1SU |
| FRANCE, David RESIGNED | Director | 31 Dec 1995 | 01 Nov 1996 | | June 1948 | Barn Cottage Friday Street, Henley On Thames, Oxfordshire, RG9 1AN |
| FULTON, Iain, Dr RESIGNED | Director | 15 May 2003 | 17 Sep 2005 | | August 1952 | 19 Penryn Close, Nuneaton, CV11 6FF |
| GILLIGAN, Mark Fintan RESIGNED | Director | 05 Feb 2008 | 15 Jun 2015 | United Kingdom | November 1967 | Attenborough House, Browns Lane Business Park, Stanton-On-The-Wolds, Nottingham, NG12 5BL |
| HALL, David RESIGNED | Director | 28 Jun 1996 | 06 Nov 2006 | | April 1955 | 2 Carter Avenue, Ratcliffe On Trent, Nottingham, Nottinghamshire, NG12 2GU |
| HARRIS, Andrew RESIGNED | Director | 05 Feb 2008 | 24 Dec 2021 | England | July 1967 | Attenborough House, Browns Lane Business Park, Stanton-On-The-Wolds, Nottingham, NG12 5BL |
| JONES, David Russell Vaughan, Dr RESIGNED | Director | 15 Jun 2015 | 31 Dec 2021 | England | June 1966 | Attenborough House, Browns Lane Business Park, Stanton-On-The-Wolds, Nottingham, NG12 5BL |
| JONES, Julian Piers William RESIGNED | Director | 01 Apr 2002 | 21 May 2010 | United Kingdom | July 1951 | 131 Musters Road, West Bridgford, Nottingham, Nottinghamshire, NG2 7AF |
| KEEBLE, Ralph Leslie RESIGNED | Director | 30 Jan 2007 | 25 Jan 2008 | United Kingdom | June 1953 | High Gables, Straight Road Boxted, Colchester, Essex, CO4 5QN |
| MAHER, Michael Leo Joseph, Dr RESIGNED | Director | 11 Jan 2010 | 01 Oct 2010 | Ireland | December 1951 | Attenborough House, Browns Lane Business Park, Stanton-On-The-Wolds, Nottingham, NG12 5BL |
| MEYER, Pascal Frank RESIGNED | Director | 03 Apr 2000 | 01 Oct 2002 | | August 1965 | Flat 1, 139 Sulgrave Road, London, W6 7PX |
| MOY, Donald, Dr RESIGNED | Director | 01 Nov 1991 | 01 Jan 1997 | | November 1946 | 19 Havelock Road, Maidenhead, Berkshire, SL6 5BJ |
| NAYSMITH, Mark William RESIGNED | Director | 15 Jul 2021 | 16 Dec 2024 | Scotland | December 1966 | Wsp House, 70, Chancery Lane, London, WC2A 1AF, England |
| NEWMAN, Philip RESIGNED | Director | 01 Apr 2002 | 29 Sep 2005 | | January 1967 | 17 Boxley Drive, West Bridgford, Nottinghamshire, NG2 7GQ |
| PATTERSON, Michael David, Dr RESIGNED | Director | 30 Jan 2007 | 10 Aug 2010 | United Kingdom | December 1968 | Attenborough House, Browns Lane Business Park, Stanton-On-The-Wolds, Nottingham, NG12 5BL |
| PENTZ, David Launcen RESIGNED | Director | | 01 Nov 1992 | | October 1939 | 15509-152 Avenue Ne, Woodville, Wa 98072, FOREIGN, Usa |
| RICHARDS, Laurence Raymond, Dr RESIGNED | Director | | 01 Oct 1992 | | May 1942 | Broad Oak Burchetts Green Lane, Littlewick Green, Maidenhead, Berkshire, SL6 3QW |
| VARRE, Pietro RESIGNED | Director | 01 Oct 2002 | 03 Feb 2003 | | June 1956 | V Mentana N 26, Torino, Italy, 10133, FOREIGN |