| HATANO, Seigo ACTIVE | Secretary | 01 May 2025 | | | | Octagon Point, 5 Cheapside, London, EC2V 6AA, United Kingdom |
| HATANO, Seigo ACTIVE | Director | 01 May 2025 | | United Kingdom | July 1967 | Octagon Point, 5 Cheapside, London, EC2V 6AA, United Kingdom |
| KIMURA, Kazuyoshi ACTIVE | Director | 28 Jun 2023 | | Japan | May 1965 | 2nd Floor, 2 Devon Way, Longbridge Technology Park, Birmingham, B31 2TS, United Kingdom |
| SAKATA, Naoki ACTIVE | Director | 11 Dec 2025 | | Germany | July 1968 | 2nd Floor, 2 Devon Way, Longbridge Technology Park, Birmingham, B31 2TS, United Kingdom |
| HASEGAWA, Wataru RESIGNED | Secretary | 12 Sep 1995 | 01 Aug 1998 | | | 48 Shaftesbury Avenue, Kenton, Harrow, Middlesex, HA3 0QY |
| KIMURA, Koji RESIGNED | Secretary | 16 Mar 2018 | 01 May 2025 | | | 28 Western Gardens, Ealing, London, W5 3RU, United Kingdom |
| MATSUDA, Shuichi RESIGNED | Secretary | | 30 Nov 1993 | | | 9 Seagrave Road, Beaconsfield, Buckinghamshire, HP9 1SU |
| MATSUDA, Yukihiro RESIGNED | Secretary | 01 Aug 2005 | 01 Nov 2009 | | | 1-5-34-1004 Kotoen, Nishinomiya, Hyogo Prefecture |
| NITTO, Toshihiro RESIGNED | Secretary | 01 Aug 1998 | 01 Sep 2002 | | | 16 Carisbrooke House, Courtlands, Richmond, Surrey, TW10 5AZ |
| OKA, Shunji RESIGNED | Secretary | 01 Sep 2002 | 01 Aug 2005 | | | Flat 31 Birley Lodge, 63 Acacia Road, London, NW8 6BJ |
| TAKAHASHI, Minoru RESIGNED | Secretary | 30 Nov 1993 | 12 Sep 1995 | | | 16 Eskdale Lodge, Lexham Gardens, Amersham, Buckinghamshire, HP6 5JJ |
| TANAKA, Shinji RESIGNED | Secretary | 01 Nov 2009 | 01 Mar 2014 | | | 57, Wentworth Park, London, N3 1YH |
| YOSHITSUGU, Keisuke RESIGNED | Secretary | 01 Mar 2014 | 16 Mar 2018 | | | 15 Princes Gardens, London, W3 0LX, England |
| ARIMOTO, Hiroshi RESIGNED | Director | 01 Aug 1997 | 30 Jun 2001 | | July 1946 | Geibelstr 61, Dusseldorf, 40235, Germany |
| ASAI, Tsuyoshi, Dr RESIGNED | Director | 01 Mar 1995 | 30 Jun 1999 | | May 1943 | 4-2-79 Seidwadai-Higashi, Kawanishi-Shi, Hyogo Prefecture, 66601, Japan |
| FUKURA, Hiroshi RESIGNED | Director | | 18 Mar 1993 | | January 1941 | Leo Strasse 68, 4000 Dusseldore Ii, FOREIGN, West Germany |
| HASEGAWA, Wataru RESIGNED | Director | 12 Sep 1995 | 01 Aug 1998 | | March 1959 | 48 Shaftesbury Avenue, Kenton, Harrow, Middlesex, HA3 0QY |
| KAGIYA, Yu RESIGNED | Director | 14 Jul 2020 | 30 Jun 2025 | Japan | May 1960 | Sumitomo Electric, Hartmetall Gmbh, Konrad-Zuse-Str. 9, 47877 Willich, Germany |
| KANAI, Toshihiko RESIGNED | Director | | 01 Mar 1995 | | December 1939 | 6/15 Atago-Yama, Nishino-Miya-Shi, Hyogo Prefecture 662, FOREIGN, Japan |
| KIMURA, Koji RESIGNED | Director | 16 Mar 2018 | 01 May 2025 | England | May 1969 | 28 Western Gardens, Ealing, London, W5 3RU, United Kingdom |
| KOBAYASHI, Masato RESIGNED | Director | 01 Mar 2011 | 16 Mar 2018 | United Kingdom | June 1959 | Flat 5, 10 Beechcroft Avenue, Golders Green, London, NW11 8BL, United Kingdom |
| MAKOTO, Abe RESIGNED | Director | 30 Jun 2025 | 11 Dec 2025 | Germany | October 1968 | 2nd Floor, 2 Devon Way, Longbridge Technology Park, Birmingham, B31 2TS, United Kingdom |
| MATSUDA, Shuichi RESIGNED | Director | | 30 Nov 1993 | | June 1960 | 9 Seagrave Road, Beaconsfield, Buckinghamshire, HP9 1SU |
| MATSUDA, Yukihiro RESIGNED | Director | 20 Jul 2005 | 01 Nov 2009 | United Kingdom | September 1964 | 36 Howcroft Crescent, West Finchley, London, N3 1PB |
| MURAYAMA, Atsushi RESIGNED | Director | 01 Sep 2009 | 28 Jun 2023 | Japan | April 1963 | Asahigaoka 2-6-3, Ikeda City, Osaka, 5630 022, Japan |
| NAGASAKA, Toru RESIGNED | Director | 17 Mar 2003 | 19 Jan 2007 | | January 1955 | 12 Lynton Mead, Woodside Park, London, N20 8DJ |
| NISHINO, Masaki RESIGNED | Director | 18 Mar 1993 | 01 Aug 1997 | | January 1944 | 3-13 5 Bancho, Kurakuen, Nishinomiya City 662, Japan |
| NITTO, Toshihiro RESIGNED | Director | 01 Aug 1998 | 01 Sep 2002 | | July 1959 | 16 Carisbrooke House, Courtlands, Richmond, Surrey, TW10 5AZ |
| NOMURA, Toshio RESIGNED | Director | 01 Jul 1999 | 17 Mar 2003 | | December 1946 | 402 Asutomizuho, 6-64 Mizuho-Cho, Itami, Hyogo, Japan |
| OKA, Shunji RESIGNED | Director | 01 Sep 2002 | 19 Jul 2005 | | March 1961 | Flat 31 Birley Lodge, 63 Acacia Road, London, NW8 6BJ |
| REYNOLDS, Terence Arthur RESIGNED | Director | 20 Apr 2000 | 30 Jun 2011 | United Kingdom | March 1943 | 24 Branksea Avenue, Poole, Dorset, BH15 4DP |
| SUGAYA, Mario RESIGNED | Director | | 23 Aug 1999 | | October 1947 | 4-6-307, Shibotani I, Ikeda-Shi, Osaka-Fu, FOREIGN, Japan |
| TAKADAYA, Takehiro RESIGNED | Director | 01 Jan 2005 | 31 Aug 2009 | | May 1961 | 53 Charlotten Strasse, Dusseldorf, 40210, Germany |
| TAKAHASHI, Minoru RESIGNED | Director | 30 Nov 1993 | 12 Sep 1995 | | April 1949 | 16 Eskdale Lodge, Lexham Gardens, Amersham, Buckinghamshire, HP6 5JJ |
| TAKASHIMA, Toshinori RESIGNED | Director | 23 Aug 1999 | 17 Mar 2003 | | November 1951 | 15 Offham Slope, London, N12 7BZ |
| TANAKA, Shinji RESIGNED | Director | 01 Nov 2009 | 01 Mar 2014 | United Kingdom | February 1962 | 57, Wentworth Park, London, N3 1YH |
| TOLLEY, Trevor David RESIGNED | Director | 06 May 2014 | 31 Mar 2021 | England | December 1952 | 3, Paper Mill Drive, Redditch, B98 8QJ, United Kingdom |
| TOMITA, Kunihiro RESIGNED | Director | 22 Jun 2005 | 23 Jun 2016 | Japan | September 1955 | 17-10 Atagoyama, Nishinomiya, Hyogo 662-0871, Japan |
| TOMITA, Kunihiro RESIGNED | Director | 30 Jun 2001 | 31 Dec 2004 | | September 1955 | Kaiser Freidrich Ring 108, Dusseldorf, 40547, Germany |
| UESAKA, Shinya RESIGNED | Director | 24 Jun 2016 | 14 Jul 2020 | Germany | April 1966 | Sumitomo Electric Hardmetal Limited, Summerleys Road, Princes Risborough, Bucks., HP27 9PW, England |
| USHIJIMA, Nozomi RESIGNED | Director | 17 Mar 2003 | 21 Jun 2005 | | May 1957 | 7-19-2 Tsukimiyama, Takarazuka, Hyogo, 665-0002, Japan |
| YAMAZAKI, Yosuke RESIGNED | Director | 19 Jan 2007 | 28 Feb 2011 | United Kingdom | August 1959 | 16 Hollywood Court, Deacons Hill Road Elstree, Borehamwood, Hertfordshire, WD6 3HU |
| YOSHITSUGU, Keisuke RESIGNED | Director | 01 Mar 2014 | 16 Mar 2018 | England | November 1953 | 15 Princes Gardens, London, W3 0LX, England |