| BROWN, Wayne ACTIVE | Secretary | 01 Oct 2015 | | | | Napier House, Auckland Park, Bletchley, Milton Keynes, MK1 1BU, England |
| BROWN, Wayne Mitchell ACTIVE | Director | 01 Oct 2015 | | England | November 1964 | Napier House, Auckland Park, Bletchley, Milton Keynes, MK1 1BU, England |
| GRUBER, Nick, Dr ACTIVE | Director | 31 Mar 2021 | | Germany | October 1973 | Napier House, Auckland Park, Bletchley, Milton Keynes, MK1 1BU, England |
| ISRAEL, Sven ACTIVE | Director | 01 Jul 2023 | | Germany | December 1983 | Napier House, Auckland Park, Bletchley, Milton Keynes, MK1 1BU, England |
| JESSUP, William RESIGNED | Secretary | 30 Jun 1999 | 19 Apr 2005 | | | Slade House, Hinwick, Wellingborough, Northamptonshire, NN29 7JB |
| LAURENCE, John Graham RESIGNED | Secretary | | 30 Jun 1999 | | | Spindlewood Cottage, 25 Hill Farm Road, Marlow Bottom, Buckinghamshire, SL7 3LX |
| RYDINGS, Robert Slater RESIGNED | Secretary | 19 Apr 2005 | 30 Sep 2015 | | | 7 Popes Acre, Haddenham, Aylesbury, Buckinghamshire, HP17 8AQ |
| BOEGNER, Wolfram Alfred Antonius RESIGNED | Director | 06 Feb 2015 | 30 Sep 2020 | Germany | November 1965 | Napier House, Auckland Park, Bletchley, Milton Keynes, MK1 1BU, England |
| BURN, Bryan Adrian Falconer RESIGNED | Director | 20 May 1994 | 03 Sep 1999 | England | May 1945 | 13 Woodthorpe Road, Putney, London, SW15 6UQ |
| CORTELLARO, Giorgio, Herr RESIGNED | Director | 01 Jan 2011 | 01 Jul 2019 | Germany | June 1964 | 65, Denbigh Road, Bletchley, Milton Keynes, Buckinghamshire, MK1 1PB |
| CUTHBERT, Stephen Colin RESIGNED | Director | | 26 Aug 1993 | Uk | October 1942 | Long Meadow 61 Burkes Road, Beaconsfield, Buckinghamshire, HP9 1PW |
| DALY, Alexander RESIGNED | Director | 01 Mar 1993 | 19 Apr 2005 | United Kingdom | March 1936 | Condover Court, Condover, Shrewsbury, Salop, SY5 7AA |
| DOBBIE, Alexander Archibald, Dr RESIGNED | Director | 06 Jun 1994 | 31 Dec 2000 | | June 1951 | Lynalan, Albany Close, Reigate, Surrey, RH2 9PP |
| FAESEL, Jurgen Richard, Dr RESIGNED | Director | 03 Sep 1999 | 31 Dec 2003 | | March 1943 | Schweinfurter Weg 49, Frankfurt Am Main, D-60599 Frankfurt Am Main, Germany |
| HOFFMANN, Christopher Hans-Walter RESIGNED | Director | 01 Feb 2018 | 31 May 2024 | South Africa | November 1960 | Napier House, Auckland Park, Bletchley, Milton Keynes, MK1 1BU, England |
| HUTCHINGS, Keith RESIGNED | Director | | 02 Sep 1999 | | May 1948 | 5 Shillingridge Park, Frieth Road, Marlow, Buckinghamshire, SL7 2QX |
| JESSUP, William RESIGNED | Director | 08 Mar 1994 | 19 Apr 2005 | England | November 1951 | Slade House, Hinwick, Wellingborough, Northamptonshire, NN29 7JB |
| JONES, John Stephen Major RESIGNED | Director | | 20 May 1994 | | April 1930 | The Elms House, Twyford, Winchester, Hants, SO21 1FQ |
| KLATT, Thomas RESIGNED | Director | 03 Sep 1999 | 30 Apr 2004 | | January 1956 | Chemetall Gmbh, Trakehner Strasse 3, 60487 Frankfurt Am Main, Germany |
| LANE OF HORSELL, Peter Stewart, Lord RESIGNED | Director | | 21 Apr 1995 | | January 1925 | Rossmore, Pond Road, Woking, Surrey, GU22 0JY |
| LUSHER, John Anderson RESIGNED | Director | 01 Nov 1994 | 03 Sep 1999 | | August 1933 | Edelweiss, Long Bottom Lane, Seer Green Beaconsfield, Buckinghamshire, HP9 2UL |
| MOLTER, Ernst Joachim RESIGNED | Director | 03 Sep 1999 | 30 Sep 2004 | | October 1943 | An Der Nachtweide 26, Frankfurt 50, Germany |
| NEIDLEIN, Ulf RESIGNED | Director | 01 Jul 2020 | 30 Jun 2023 | Germany | June 1965 | Napier House, Auckland Park, Bletchley, Milton Keynes, MK1 1BU, England |
| RYDINGS, Robert Slater RESIGNED | Director | 02 Jan 2006 | 30 Sep 2015 | England | September 1953 | 7 Popes Acre, Haddenham, Aylesbury, Buckinghamshire, HP17 8AQ |
| SCHNEIDER, Sven RESIGNED | Director | 19 Sep 2012 | 06 Feb 2015 | Germany | July 1974 | 65, Denbigh Road, Bletchley, Milton Keynes, Buckinghamshire, MK1 1PB |
| STOERMER, Matthias Wilhelm RESIGNED | Director | 12 Aug 2004 | 21 Apr 2011 | Germany | March 1965 | Kurmainzer Str 13, Alzenau 63755, Germany |
| SWALLOW, David RESIGNED | Director | | 28 Feb 1994 | | December 1929 | Sa Tanca Woodhurst Park, Oxted, Surrey, RH8 9HA |
| VAN DEN HEYKANT, Adrianus Cornelis Maria RESIGNED | Director | 01 Jan 2011 | 14 Jun 2017 | Netherlands | March 1958 | 65, Denbigh Road, Bletchley, Milton Keynes, Buckinghamshire, MK1 1PB |
| VANNERBERG, Per Gosta Markus RESIGNED | Director | 02 Jan 2006 | 30 Jun 2010 | Sweden | April 1961 | Blaarvsgrand 82, Vallingby, 162 45, Sweden |
| WATSON, Michael John RESIGNED | Director | 01 Jan 2004 | 02 Jan 2006 | Hong Kong | January 1954 | Grafton House, Stable Close, Finmere, Buckinghamshire, MK18 4AD |
| WENZEL, Kurt RESIGNED | Director | 19 Apr 2005 | 01 Jan 2011 | Germany | October 1949 | Ludwig-Schaefer-Weg 16, Kelkheim, 65779, Germany |
| WILBY, Dennis Frank RESIGNED | Director | | 31 Aug 1994 | | November 1946 | Higher Croft City, Bledlow Ridge, High Wycombe, Buckinghamshire, HP14 4AB |