| JACKSON, Stacey- Ann ACTIVE | Secretary | 30 Sep 2025 | | | | Yokohama House, Dawson Road, Mount Farm, Bletchley, Buckinghamshire, MK1 1QY, England |
| MAKI, Takashi ACTIVE | Director | 01 Jan 2024 | | Germany | October 1976 | Yokohama House, Dawson Road, Mount Farm, Bletchley, Buckinghamshire, MK1 1QY, England |
| GROSS, Phillip David RESIGNED | Secretary | | 07 Sep 1992 | | | 39 Gordon Avenue, Stanmore, Middlesex, HA7 3QQ |
| HEVER-SMITH, Marisa RESIGNED | Secretary | 19 Sep 2022 | 30 Sep 2025 | | | Yokohama House, Dawson Road, Mount Farm, Bletchley, Buckinghamshire, MK1 1QY, England |
| MELSOM, Trevor Alan RESIGNED | Secretary | 07 Sep 1992 | 01 Oct 2021 | | | Yokohama House, Dawson Road, Mount Farm, Bletchley, Buckinghamshire, MK1 1QY, England |
| PHILPOTT, Brian George RESIGNED | Secretary | 01 Oct 2021 | 30 Sep 2022 | | | Yokohama House, Dawson Road, Mount Farm, Bletchley, Buckinghamshire, MK1 1QY, England |
| ARIMUNE, Masakazu RESIGNED | Director | 30 Apr 2002 | 31 Jul 2008 | | December 1955 | 206,1-30 Kyuuden 3-Chome, Setagaya-Ku, Tokyo, FOREIGN, Japan |
| ATSUMI, Takayuki RESIGNED | Director | 16 Mar 2011 | 01 Apr 2015 | Germany | May 1967 | 12 Red Lion Square, London, WC1R 4QD |
| FAIRLIE, Peter William RESIGNED | Director | 13 Jul 2022 | 31 Mar 2024 | England | January 1962 | Yokohama House, Dawson Road, Mount Farm, Bletchley, Buckinghamshire, MK1 1QY, England |
| FUJINO, Takeshi RESIGNED | Director | 01 Jul 2020 | 01 Apr 2022 | Germany | August 1965 | Yokohama House, Dawson Road, Mount Farm, Bletchley, Buckinghamshire, MK1 1QY, England |
| FUKUI, Takashi RESIGNED | Director | 20 Sep 2001 | 12 Sep 2006 | | October 1952 | Achenbachstr. 3, Dusseldorf, 40233, FOREIGN, Germany |
| GRAMATIKOV, Aleksandar Iliev RESIGNED | Director | 01 Apr 2022 | 31 Dec 2023 | Italy | July 1985 | Yokohama House, Dawson Road, Mount Farm, Bletchley, Buckinghamshire, MK1 1QY, England |
| GREENFIELD, Nicholas Robert RESIGNED | Director | 01 Oct 2021 | 18 Nov 2022 | United Kingdom | February 1967 | Yokohama House, Dawson Road, Mount Farm, Bletchley, Buckinghamshire, MK1 1QY, England |
| GROSS, Phillip David RESIGNED | Director | | 23 Aug 2001 | | September 1957 | Wood End House, Pertenhall, Bedfordshire, MK44 2AL |
| HANADA, Yusaku RESIGNED | Director | 01 Apr 2018 | 26 Feb 2020 | Germany | July 1975 | Yokohama House, Dawson Road, Mount Farm, Bletchley, Buckinghamshire, MK1 1QY, England |
| HASHIMOTO, Keishi RESIGNED | Director | 06 Feb 2015 | 01 Jul 2020 | Germany | March 1959 | Yokohama House, Dawson Road, Mount Farm, Bletchley, Buckinghamshire, MK1 1QY, England |
| HEVER-SMITH, Marisa RESIGNED | Director | 19 Sep 2022 | 30 Sep 2025 | England | June 1982 | Yokohama House, Dawson Road, Mount Farm, Bletchley, Buckinghamshire, MK1 1QY, England |
| HOSOI, Kazuyoshi RESIGNED | Director | 17 Feb 2010 | 16 Mar 2011 | Germany | June 1968 | 12 Red Lion Square, London, WC1R 4QD |
| IMAI, Eisuke RESIGNED | Director | 28 Mar 2019 | 01 Jul 2020 | Germany | June 1971 | Yokohama House, Dawson Road, Mount Farm, Bletchley, Buckinghamshire, MK1 1QY, England |
| KARASHIMA, Norio RESIGNED | Director | 20 Sep 1997 | 20 Sep 2001 | | February 1953 | 4-3-16 Midori Cho, Koganei Shi Tokyo, Japan, FOREIGN |
| KAWAI, Masataka RESIGNED | Director | 20 Sep 1997 | 18 Sep 1998 | | February 1948 | 13 Purley Knoll, Purley, Surrey, CR8 3AT |
| KEIZAN, Edward Ivor RESIGNED | Director | 07 Sep 1992 | 06 Apr 2009 | | September 1944 | 11 Cadogan Road, Bryanston, Sandton, 2146, Republic South Africa |
| KOMATSU, Shigeo RESIGNED | Director | 06 Aug 2007 | 22 Oct 2009 | | August 1956 | 15 Feldstrasse 15, Dusseldorf, D40479, Germany |
| KOSEKI, Kenichiro RESIGNED | Director | 17 May 2021 | 01 Sep 2022 | Germany | May 1968 | Yokohama House, Dawson Road, Mount Farm, Bletchley, Buckinghamshire, MK1 1QY, England |
| MAEDA, Akiya RESIGNED | Director | 28 Apr 1994 | 20 Sep 1997 | | December 1941 | 23-3 Nishihara 2-Chome, Shibuya -Ku, Tokyo 151, Japan |
| MELSOM, Trevor Alan RESIGNED | Director | 20 Sep 2001 | 01 Oct 2021 | United Kingdom | December 1955 | Yokohama House, Dawson Road, Mount Farm, Bletchley, Buckinghamshire, MK1 1QY, England |
| MIKAMI, Osamu RESIGNED | Director | 22 Oct 2009 | 01 Jan 2012 | Germany | June 1962 | 12 Red Lion Square, London, WC1R 4QD |
| NISHI, Fumihiro RESIGNED | Director | | 01 Mar 1996 | | August 1952 | 113 Princes Gardens, London, W3 0LR |
| OHTANI, Yoshihiro RESIGNED | Director | | 02 Apr 1993 | | February 1941 | 4-2 Ohtemachi 1-Chome, Chiyoda-Ku, Tokyo, FOREIGN, Japan |
| OISHI, Takao RESIGNED | Director | 12 Sep 2006 | 06 Aug 2007 | | December 1955 | 15 Feldstrasse, Dusseldorf, D-40479, Germany |
| PHILPOTT, Brian George RESIGNED | Director | 01 Oct 2021 | 30 Sep 2022 | England | March 1979 | Yokohama House, Dawson Road, Mount Farm, Bletchley, Buckinghamshire, MK1 1QY, England |
| PONZONI FUMAGALLI, Giovanni Angelo RESIGNED | Director | 01 Jan 2024 | 30 Jan 2026 | Germany | June 1979 | Yokohama House, Dawson Road, Mount Farm, Bletchley, Buckinghamshire, MK1 1QY, England |
| ROSIN, Alan Michael RESIGNED | Director | | 07 Sep 1992 | | January 1950 | 14 Theobalds Road, London, WC1X 8PF |
| SANO, Mikio RESIGNED | Director | 01 Mar 1996 | 20 Sep 1997 | | November 1951 | Bruggener Weg 30, Dusseldorf, D40547, Germany |
| SCALZO, Pierfrancesco RESIGNED | Director | 01 Feb 2026 | 01 Jun 2026 | Italy | December 1971 | Yokohama House, Dawson Road, Mount Farm, Bletchley, Buckinghamshire, MK1 1QY, England |
| SEWARD, David Ronald RESIGNED | Director | | 01 Oct 2021 | United Kingdom | June 1959 | Yokohama House, Dawson Road, Mount Farm, Bletchley, Buckinghamshire, MK1 1QY, England |
| SHIOIRI, Hiroyuki RESIGNED | Director | 01 Jul 2020 | 31 Oct 2023 | Germany | February 1970 | Yokohama House, Dawson Road, Mount Farm, Bletchley, Buckinghamshire, MK1 1QY, England |
| TAKAMI, Shuichi RESIGNED | Director | 02 Apr 1993 | 28 Apr 1994 | | October 1937 | 9-24 2-Chome Tsuruma, Machida City, Tokyo, 194, Japan |
| TAKANO, Masayuki RESIGNED | Director | 18 Sep 1998 | 30 Apr 2002 | | June 1949 | Meineckestr 65, Dusseldorf 40474, Germany, FOREIGN |
| TAKIMOTO, Shinichi RESIGNED | Director | 14 Mar 2014 | 06 Feb 2015 | Germany | January 1964 | 12 Red Lion Square, London, WC1R 4QD |
| TSUZUKU, Ichiro RESIGNED | Director | 31 Jul 2008 | 17 Feb 2010 | | September 1959 | 22-19, 2-Chome, Imagawa Suginami-Ku, Tokyo, Japan |
| UTO, Naoki RESIGNED | Director | 01 Apr 2015 | 01 Apr 2018 | Germany | November 1977 | Yokohama House, Dawson Road, Mount Farm, Bletchley, Buckinghamshire, MK1 1QY, England |
| YAMAISHI, Masataka RESIGNED | Director | 01 Jan 2012 | 14 Mar 2014 | Germany | June 1962 | 12 Red Lion Square, London, WC1R 4QD |
| YAMAJI, Soichiro RESIGNED | Director | 01 Sep 2022 | 31 Dec 2023 | Germany | December 1971 | Yokohama House, Dawson Road, Mount Farm, Bletchley, Buckinghamshire, MK1 1QY, England |