| ABABNEH, Maher, Dr. ACTIVE | Director | 21 Nov 2019 | | United Kingdom | February 1972 | Wharf Street, Aston, Birmingham, B6 5SA, England |
| BULL, Thomas Matthew ACTIVE | Director | 01 Jan 2025 | | United Kingdom | September 1989 | 16, Great Queen Street, Covent Garden, London, WC2B 5AH |
| CHARMAN, Paul David ACTIVE | Director | 21 Nov 2019 | | England | October 1968 | Wharf Street, Aston, Birmingham, B6 5SA, England |
| HANDLEY, David Leslie ACTIVE | Director | 01 Apr 2018 | | England | October 1966 | 5, Pennard Close, Brackmills, Northampton, NN4 7BE, United Kingdom |
| HEROLD, Rudolf RESIGNED | Secretary | 24 May 1994 | 13 Mar 1995 | | | Weathertop Buckhurst Road, Ascot, Berkshire, SL5 7RS |
| KAUFMAN, Andrew Charles RESIGNED | Secretary | 13 Mar 1995 | 30 Sep 2015 | | | Flat 7 Andover House, 9a Eton Avenue, London, NW3 3EL |
| KAUFMAN, Andrew Charles RESIGNED | Secretary | | 24 May 1994 | | | 15 The Ridgeway, Stanmore, Middlesex, HA7 4BE |
| EYCHMUELLER, Wolfgang RESIGNED | Director | | 30 Sep 1999 | | May 1929 | Wilhelm-Leuschner Str 42, D-89075 Ulm, Germany |
| GRUETTNER, Daniel Herbert Gottschalck RESIGNED | Director | 01 Aug 2019 | 21 Nov 2019 | Germany | September 1979 | 5, Pennard Close, Brackmills, Northampton, NN4 7BE, United Kingdom |
| HEFELE, Horst RESIGNED | Director | 02 Jan 2008 | 30 Sep 2015 | | December 1955 | 5, Pennard Close, Brackmills, Northampton, NN4 7BE, United Kingdom |
| HEROLD, Rudolf RESIGNED | Director | | 30 Sep 2015 | England | March 1950 | 5, Pennard Close, Brackmills, Northampton, NN4 7BE, United Kingdom |
| HOLZER, Hans Peter, Dr RESIGNED | Director | | 02 Jan 2003 | | October 1939 | Blumenstrasse 21, D-89129 Langenau-Hoervelsingen, Germany |
| JENKINS, Ivor John, Dr RESIGNED | Director | 30 Jul 2004 | 02 Jan 2008 | | December 1944 | 12 Dingle View, Bridgnorth, Shropshire, WV16 4JL |
| KROENER, Harald RESIGNED | Director | | 02 Jan 2008 | | February 1952 | Maienweg 176, D 89081 Ulm, Germany |
| NUEBLING, Joerg, Dr RESIGNED | Director | 02 Jan 2008 | 01 Aug 2019 | Germany | July 1956 | 5, Pennard Close, Brackmills, Northampton, NN4 7BE, United Kingdom |
| RIESTER, Daniel Marc RESIGNED | Director | 01 Jul 2017 | 31 Mar 2018 | England | January 1983 | 5, Pennard Close, Brackmills, Northampton, NN4 0BE, United Kingdom |
| SEAL, Gordon Leonard RESIGNED | Director | | 30 Jul 2004 | | November 1944 | 11 Hall Close, Kislingbury, Northampton, NN7 4BQ |
| TRAA, Werner Theodor RESIGNED | Director | 02 Jan 2003 | 21 Nov 2019 | | January 1959 | 5, Pennard Close, Brackmills, Northampton, NN4 7BE, United Kingdom |
| WEYLER, Lothar RESIGNED | Director | | 30 Jun 2017 | England | January 1954 | 5, Pennard Close, Brackmills, Northampton, NN4 7BE, United Kingdom |