| SHAW, Alan ACTIVE | Secretary | 17 Jun 2005 | | | | Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2AS |
| BRIDGE, Benedict Lenthall ACTIVE | Director | 01 Jun 2022 | | Germany | September 1971 | Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2AS |
| EDE, Nigel Ramon ACTIVE | Director | 15 Jan 2002 | | United Kingdom | November 1963 | Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2AS |
| ESCOTT, Katherine Edda ACTIVE | Director | 01 Dec 2023 | | United Kingdom | June 1979 | Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2AS |
| CHATFIELD, Melanie Jane RESIGNED | Secretary | 12 Aug 2000 | 27 Jun 2001 | | | 32 Butterfield Road, Wheathampstead, St. Albans, Hertfordshire, AL4 8QH |
| EDE, Nigel Ramon RESIGNED | Secretary | 17 Feb 2005 | 17 Jun 2005 | | | 31 Grantchester Road, Cambridge, Cambridgeshire, CB3 9ED |
| GRIMES, Kristian Edward RESIGNED | Secretary | 27 Jun 2001 | 09 Jul 2004 | | | 32 Poppy Field, Biggleswade, Bedfordshire, SG18 8TU |
| PEACHEY, Eric Albert RESIGNED | Secretary | | 11 Aug 2000 | | | 27 Ripon Way, St Albans, Hertfordshire, AL4 9AJ |
| ROSS, Fiona Elizabeth RESIGNED | Secretary | 10 Sep 2004 | 17 Feb 2005 | | | 234b Finchley Road, Hampstead, London, NW3 6DJ |
| BERANGER, Eric Eugene Albert RESIGNED | Director | 20 Feb 2013 | 20 Oct 2016 | France | February 1963 | Astrium Satellites, 12 Rue Pasteur, Bp 76, Suresnes, Paris, 92152, France |
| BOUVIER, Antoine Francois RESIGNED | Director | 15 Jan 2002 | 11 Jun 2007 | | October 1959 | 397 Rue Paradis, Marseille, 13008, FOREIGN, France |
| CARLIER, Louis Armand RESIGNED | Director | 26 Oct 2000 | 15 Jan 2002 | | January 1949 | 13 Avenue Du Marechal Douglas Haig, Versailles, 78000, France |
| CHANT, Christopher Alan RESIGNED | Director | 26 Oct 2000 | 28 Jun 2002 | England | April 1953 | 45 St James Avenue, Ongar, Essex, CM5 9EL |
| DUDOK, Everardus Wilhelmus Martinus RESIGNED | Director | 01 Sep 2007 | 20 Feb 2013 | Germany | February 1959 | Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2AS |
| DUDOK, Evert RESIGNED | Director | 16 Mar 2002 | 31 Aug 2003 | | February 1959 | Alpenrosenstr 22, Baldham, Bavaria, 85598, Germany |
| ENSSLIN, Klaus Joerg, Dr RESIGNED | Director | 26 Oct 2000 | 15 Mar 2002 | | January 1955 | Hardtstrasse 62, Immenstaad, 88090, Germany |
| FRANKLIN, Richard John RESIGNED | Director | 01 Jan 2020 | 19 Oct 2023 | England | April 1967 | Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2AS |
| FRANKS, Nicholas Ellis RESIGNED | Director | 01 Jul 1996 | 15 Jan 2002 | | September 1947 | Norcott Cottage Dudswell, Northchurch, Berkhamsted, Hertfordshire, HP4 1LA |
| FRISTON, David John RESIGNED | Director | 15 Jan 2002 | 30 Sep 2003 | | June 1946 | 25 Granby Road, Stevenage, Hertfordshire, SG1 4AR |
| HARWOOD, Jonathan Alexander RESIGNED | Director | 26 Oct 2000 | 30 Sep 2002 | | March 1955 | Lawton Bridge Road, Cranleigh, Surrey, GU6 7HH |
| HEALY, Michael, Dr. RESIGNED | Director | 01 May 2012 | 08 Jul 2014 | England | January 1963 | Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2AS |
| JOY, Aidan Mark RESIGNED | Director | 01 May 2012 | 06 Dec 2013 | United Kingdom | November 1961 | Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2AS |
| KIND, Josef Otto RESIGNED | Director | 26 Oct 2000 | 31 Aug 2003 | | March 1947 | Kiefernweg 3, 28857 Syke, Germany |
| KING, Ian Graham, Mr. RESIGNED | Director | | 16 Jul 1999 | United Kingdom | April 1956 | PO16 |
| LATHAM, Desiree Pamela RESIGNED | Director | 01 May 2012 | 28 Jun 2013 | France | April 1956 | Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2AS |
| MAYNE, Peter Robert RESIGNED | Director | | 11 Sep 1992 | | July 1955 | 40 Grove Road, Havant, Hampshire, PO9 1AR |
| MUSGRAVE, Colin James RESIGNED | Director | 16 Jul 1999 | 15 Jan 2002 | | August 1947 | Rookery Farm House, Bradden, Towcester, Northamptonshire, NN12 8ED |
| PAYNTER, Colin RESIGNED | Director | 28 Jun 2002 | 01 Jan 2020 | United Kingdom | October 1958 | Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2AS |
| PITTOMVILS, Edwin RESIGNED | Director | 08 Jul 2014 | 20 Oct 2016 | Belgium | October 1960 | Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2AS |
| SCANNELL, David Anthony RESIGNED | Director | 26 Oct 2000 | 06 May 2003 | | August 1945 | Red Barns, Walsal End Lane, Hampton In Arden, Solihull, B92 0HX |
| STEVENS, Michael Joseph RESIGNED | Director | 08 Jul 2014 | 31 Aug 2016 | England | February 1962 | Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2AS |
| WHITEHEAD, Julian Bruce RESIGNED | Director | 08 Jul 2014 | 30 Apr 2022 | Germany | December 1962 | Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2AS |
| WIGNALL, Walter Richard RESIGNED | Director | | 12 Sep 1994 | | February 1949 | 5 The Avenue, Summersdale, Chichester, West Sussex, PO19 4PZ |
| WOOD, Andrew Patrick RESIGNED | Director | 29 Jan 2009 | 01 Apr 2015 | England | March 1965 | Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2AS |
| WOOD, Roger Nicholas Brownlow RESIGNED | Director | 15 Aug 1994 | 15 Apr 1996 | United Kingdom | July 1942 | Ryemead House, Lower Hampton Road, Sunbury On Thames, Middlesex, TW16 5PR |