| BELL, Samantha ACTIVE | Secretary | 11 May 2026 | | | | 10 St. Giles Square, London, WC2H 8AP, United Kingdom |
| IIZAWA, Hiroaki ACTIVE | Director | 01 Apr 2026 | | United Kingdom | January 1969 | 10 St. Giles Square, London, WC2H 8AP, United Kingdom |
| ISHIDA, Katsusuke ACTIVE | Director | 30 Jun 2025 | | United Kingdom | June 1972 | 10 St. Giles Square, London, WC2H 8AP, United Kingdom |
| AOKI, Noburo RESIGNED | Secretary | 28 Sep 2000 | 29 Jun 2001 | | | 34 Hillcroft Crescent, Ealing, London, W5 2SQ |
| BEGLIN, Jane Elizabeth RESIGNED | Secretary | 27 Mar 1995 | 22 Nov 1999 | | | 117 Salcott Road, London, SW11 6DG |
| BIBBY, Simon Nicholas RESIGNED | Secretary | 22 Nov 1999 | 28 Sep 2000 | | | 2 Inglewood Copse, Bromley, Kent, BR1 2BB |
| CHEADLE, Jayne RESIGNED | Secretary | 22 Jun 2009 | 11 May 2026 | | | 10 St. Giles Square, London, WC2H 8AP, United Kingdom |
| FRANKS, Deborah Ann RESIGNED | Secretary | | 02 Dec 1994 | | | 15 The Avenue, Claygate, Essex, KT10 0RX |
| HEDGE, David Martin RESIGNED | Secretary | 31 May 2007 | 22 Jun 2009 | | | 24 Burnham Road, Leigh On Sea, Essex, SS9 2JU |
| WALTERS, Geoffrey Paul RESIGNED | Secretary | 29 Jun 2001 | 31 May 2007 | | | 31 Holland Park, London, W11 3TA |
| YAMAMOTO, Taizo RESIGNED | Secretary | 02 Dec 1994 | 27 Mar 1995 | | | Little Warren Tattenham Crescent, Epsom, Surrey, KT18 5NU |
| DANTZIC, Roy Matthew RESIGNED | Director | 02 Aug 1993 | 31 Mar 1995 | | July 1944 | 65 Springfield Road, St Johns Wood, London, NW8 0QJ |
| FERNANDES, Milton Anthony RESIGNED | Director | 06 Jul 1998 | 30 Apr 1999 | United Kingdom | December 1961 | Wisteria House, 67 Kingston Lane, Teddington, Middlesex, TW11 9HN |
| ICHIKI, Hiroto RESIGNED | Director | 29 May 2015 | 01 Apr 2026 | England | June 1962 | 10 St. Giles Square, London, WC2H 8AP, United Kingdom |
| ICHIKI, Hiroto RESIGNED | Director | 15 Jul 2003 | 05 Aug 2009 | | June 1962 | Flat 3, 54 Kings Road, Richmond, Surrey, TW10 6EP |
| IIZAWA, Hiroaki RESIGNED | Director | 05 Aug 2009 | 29 May 2015 | United Kingdom | January 1969 | Grove House, 248a Marylebone Road, London, NW1 6JZ |
| ISHIYAMA, Tsutomu RESIGNED | Director | 25 May 1993 | 11 Apr 1997 | | March 1949 | 1 Corringham Road, Wembley, Middlesex, HA9 9PX |
| KAJIMA, Shoichi RESIGNED | Director | | 08 Mar 1996 | Japan | August 1930 | 4-11-65, Minami-Azabu, Minato-Ku, Tokyo, Japan |
| LIPTON, Stuart Anthony, Sir RESIGNED | Director | | 31 Mar 1995 | England | November 1942 | 40 Queens Grove, London, NW8 6HH |
| METTER, David Antony RESIGNED | Director | | 01 Jul 1993 | United Kingdom | August 1952 | W2 |
| NAKAGAWA, Yukiyasu RESIGNED | Director | 31 Mar 1995 | 06 Jul 1998 | | August 1946 | 6 Marlborough Hill, St Johns Wood, London, NW8 0NN |
| RUDD-JONES, Julian Mark RESIGNED | Director | 22 Nov 1999 | 30 Jun 2025 | United Kingdom | June 1955 | 10 St. Giles Square, London, WC2H 8AP, United Kingdom |
| SHIBASAKI, Katsumi RESIGNED | Director | 15 Jul 2003 | 31 May 2007 | | February 1949 | 35 St Mary's Court 4 Palgrave, Gardens Prince Regents Gate, London, NW1 6EW |
| SUZUKI, Fujio RESIGNED | Director | 11 Apr 1997 | 15 Jul 2003 | | March 1948 | 6 Marlborough Hill, St Johns Wood, London, NW8 0NN |
| UCHIDA, Ken RESIGNED | Director | 01 Jan 2013 | 31 Mar 2015 | England | May 1956 | 55, Baker Street, London, W1U 8EW, United Kingdom |
| UCHIDA, Koji RESIGNED | Director | | 17 Jul 1997 | | October 1935 | Nakano-Ku Tokyo, Shirasagi, 3-18-5 Japan, FOREIGN |
| UCHIDA, Michiya RESIGNED | Director | 01 Apr 2015 | 29 May 2015 | Japan | January 1960 | 55, Baker Street, London, W1U 8EW |
| UCHIDA, Michiya RESIGNED | Director | 31 May 2007 | 01 Jan 2013 | England | January 1960 | 55, Baker Street, London, W1U 8EW, United Kingdom |
| YAMAMOTO, Taizo RESIGNED | Director | 31 Mar 1995 | 30 Jul 2004 | | June 1955 | High Trees, 41 Hillside, Banstead, Surrey, SM7 1HG |