| FITTON, David John ACTIVE | Secretary | 17 Oct 2017 | | | | 2, Cold Arbor Road, Sevenoaks, TN13 2PP, England |
| BARKER, Elizabeth Jean, Baroness ACTIVE | Director | 30 Oct 2019 | | England | January 1961 | The Japan Society, 13/14 Cornwall Terrace, London, NW1 4QP |
| FITTON, David John ACTIVE | Director | 17 Oct 2017 | | United Kingdom | January 1955 | 2, Cold Arbor Road, Sevenoaks, TN13 2PP, United Kingdom |
| LACOMBLE, Sylvain, Dr ACTIVE | Director | 01 Dec 2023 | | Belgium | August 1982 | Terumo Bct, Ikaroslaan 41, Zaventem, 1930, Belgium |
| LANSLEY, Andrew David, Lord ACTIVE | Director | 04 Nov 2015 | | England | December 1956 | The Japan Society, 13/14 Cornwall Terrace, London, NW1 4QP |
| MADDEN, Paul Damian ACTIVE | Director | 13 Jul 2022 | | England | April 1959 | The Japan Society, 13/14 Cornwall Terrace, London, NW1 4QP |
| MCCONNELL, Jack Wilson, Rt Hon Lord ACTIVE | Director | 07 Dec 2010 | | Scotland | June 1960 | Houses Of Parliament, Westminster, London, SW1A 0PW |
| MORGAN, Nicola Ann, Baroness ACTIVE | Director | 12 Nov 2025 | | England | October 1972 | The Japan Society, 13/14 Cornwall Terrace, London, NW1 4QP |
| SLABBERT, Mathee Norman ACTIVE | Director | 27 Jul 2026 | | Switzerland | November 1984 | 28, Richtiring 28, 8304 Wallisellen, Switzerland |
| WILLIAMSON-WRIGHT, John Harold Nilsson, Dr ACTIVE | Director | 04 Nov 2015 | | England | January 1965 | 16, Homerton House, Homerton Street, Cambridge, CB2 8NZ, England |
| CONTE-HELM, Marie, Professor RESIGNED | Secretary | 14 Nov 2011 | 17 Oct 2017 | | | 176a, Leighton Road, London, NW5 2RE, United Kingdom |
| GRANT, Richard Lawrence RESIGNED | Secretary | 12 Jul 1994 | 01 Dec 1998 | | | 18 The Barons, St Margarets, Middlesex, TW1 2AP |
| GUEST, Melville Richard John RESIGNED | Secretary | 11 Mar 2003 | 05 Dec 2008 | | | 126 Rivermead Court, Ranelagh Gardens, London, SW6 3SD |
| HUMFREY, Charles Thomas William RESIGNED | Secretary | 06 Dec 2008 | 03 Nov 2011 | | | 31, Welford Place, Wimbledon, London, SW19 5AJ |
| LOEHNIS, Anthony David RESIGNED | Secretary | 12 Jul 1999 | 11 Mar 2003 | | | 11 Cranleigh, 139 Ladbroke Road, London, W11 3PX |
| PATMORE, Andrew Howard RESIGNED | Secretary | | 12 Jul 1994 | | | 185 White Woman Lane, Old Catton, Norwich, Norfolk, NR6 7JL |
| BAKER, Kenneth Wilfred, Rt Hon Lord RESIGNED | Director | 16 Jul 1992 | 25 Jun 1997 | United Kingdom | November 1934 | Flat 6, 7 Onslow Gardens, South Kensington, London, SW7 3LY |
| BERRY, Peter Fremantle RESIGNED | Director | 10 Jul 2000 | 16 Sep 2003 | England | May 1944 | 58 Pyrland Road, London, N5 2JD |
| BLAKENHAM, Michael John, Viscount RESIGNED | Director | | 28 Aug 2003 | United Kingdom | January 1938 | 1 St Leonards Studios, Smith Street, London, SW3 4EN |
| BOYD, John Dixon Ikle, Sir RESIGNED | Director | 16 Oct 2006 | 04 Nov 2015 | United Kingdom | January 1936 | 87 Elizabeth Street, London, SW1W 9PG |
| BRIKHO, Samir Yacoub RESIGNED | Director | 03 Jul 2007 | 20 Jan 2016 | United Kingdom | May 1958 | Flat 1 82 Eaton Place, London, SW1X 8AU |
| BULMER THOMAS, Victor Gerald, Professor RESIGNED | Director | 16 Jul 2001 | 30 Sep 2003 | United Kingdom | March 1948 | 55 Maze Hill, Greenwich, London, SE10 8XQ |
| CAMERON, Lisa, Dr RESIGNED | Director | 24 Feb 2016 | 20 Nov 2024 | England | April 1972 | The Japan Society, 13/14 Cornwall Terrace, London, NW1 4QP |
| CAMPBELL, Walter Menzies, The Rt Hon Sir RESIGNED | Director | 25 Jun 1997 | 05 Sep 2003 | United Kingdom | May 1941 | 9 Lynedoch Place, Edinburgh, Scotland, EH3 7PX |
| CHANDLER, Martin James RESIGNED | Director | 28 Jun 2005 | 31 Dec 2006 | United Kingdom | November 1964 | 10d Chartfield Avenue, London, SW15 6HF |
| CHELTON, Simon Roger Lewis RESIGNED | Director | 05 Jan 2010 | 01 Apr 2012 | United Kingdom | December 1957 | Farnborough Aerospace Centre, Government House Road, Farnborough, Hampshire, GU14 6YU |
| COLLUM, Hugh Robert RESIGNED | Director | 06 Nov 1999 | 31 May 2004 | | June 1940 | Clinton Lodge, Fletching, East Sussex, TN22 3ST |
| CONTE HELM, Marie, Professor RESIGNED | Director | 14 Nov 2011 | 17 Oct 2017 | Uk | November 1949 | 176a, Leighton Road, London, NW5 2RE, Uk |
| CRISP, Andrew Colin RESIGNED | Director | 17 Sep 2007 | 15 Dec 2009 | England | January 1967 | Flat 4 Swift Court, 108 Clarence Road, Fleet, Hampshire, GU51 3SG |
| CUNNINGHAM, John Anderson, Lord RESIGNED | Director | 20 Jun 2017 | 01 Dec 2021 | United Kingdom | August 1939 | House Of Lords, Houses Of Parliament, London, SW1A 0PW, England |
| CUNNINGHAM, John Anderson, Lord RESIGNED | Director | 01 Nov 2004 | 04 Nov 2015 | United Kingdom | August 1939 | West Granary, Low Shilford, Stocksfield, Northumberland, NE43 7HW |
| DAVIES, Howard John, Sir RESIGNED | Director | 16 Jul 1992 | 05 Jun 1995 | England | February 1951 | 3 Brackenbury Gardens, London, W6 0BP |
| DONNELLY, Alan John RESIGNED | Director | 25 Apr 2018 | 21 Oct 2020 | England | July 1957 | 26-27, Bedford Square, London, WC1B 3HP, United Kingdom |
| EBERLE, James Henry Fuller, Admiral Sir RESIGNED | Director | | 30 Sep 1998 | | May 1927 | Lower Abbotsleigh, Blackawton, Totnes, Devon, TQ9 7AF |
| EMMOTT, William John RESIGNED | Director | 28 Jun 2005 | 21 Oct 2008 | United Kingdom | August 1956 | Marsh Hill House, Dulverton, Somerset, TA22 9QF |
| ENNIS, Anthony RESIGNED | Director | 01 Apr 2012 | 22 Jan 2013 | Japan | August 1953 | Bae Systems (Intl.) Limited Ark Mori Building, 1-12-32 Akasaka, Minato-Ku, Tokyo, 106-0047, Japan |
| FLETCHER, John Wilfred Sword RESIGNED | Director | | 06 Dec 1994 | | October 1940 | House B 36 Island Road, Deepwater Bay, Hong Kong Sar, Pr China |
| FRASER, Andrew John, Mr. RESIGNED | Director | 22 May 1998 | 21 Aug 2003 | England | October 1950 | 121 Ridgway, Wimbldon, London, SW19 4RE |
| GAMBLE, Christine Elizabeth, Dr RESIGNED | Director | 01 Sep 1999 | 16 Jul 2001 | | March 1950 | 39 Gilpin Avenue, London, SW14 8QX |
| GARDEN, Susan Elizabeth, Baroness RESIGNED | Director | 24 Oct 2013 | 30 Oct 2019 | England | February 1944 | House Of Lords, London, London, SW1A 0PW, England |
| GHOSTINE, Gilbert RESIGNED | Director | 24 Jan 2012 | 26 Feb 2014 | Singapore | February 1960 | 1, 1 George Street, 13th Floor, Unit 01, One George Street, Singapore, 049145, Singapore |
| GRIFFITHS, Jane Patricia RESIGNED | Director | 01 Sep 1999 | 30 Sep 2003 | | April 1954 | 15 Piggotts Road, Caversham, Reading, Berkshire, RG4 8EN |
| GUEST, Melville Richard John RESIGNED | Director | 16 Jul 2001 | 05 Dec 2008 | | November 1943 | 126 Rivermead Court, Ranelagh Gardens, London, SW6 3SD |
| GUINNESS, John Ralph Sidney, Sir RESIGNED | Director | 15 Feb 1995 | 19 Aug 1999 | | December 1935 | 12 Hasker Street, London, SW3 2LG |
| HARDING, Christopher George Francis, Sir RESIGNED | Director | 27 Jan 1995 | 13 Dec 1999 | | October 1939 | 7 Rutland Street, London, SW7 1EJ |
| HAYASHI, Yoshiro RESIGNED | Director | 28 Jun 2005 | 03 Feb 2006 | | May 1936 | 3-13-6 Nishishinagawa, Shinaghawa-Ku, Tokyo 1410033, Japan |
| HOOK, Glenn Pawson, Professor RESIGNED | Director | 08 Sep 2008 | 04 Nov 2015 | United Kingdom | June 1949 | 31, Whiteley Wood Road, Sheffield, South Yorkshire, S11 7FF |
| HOWARD OF LYMPNE, Michael, Rt Hon RESIGNED | Director | 15 Mar 2011 | 04 Nov 2015 | United Kingdom | July 1941 | The Japan Society, 13/14 Cornwall Terrace, London, NW1 4QP, United Kingdom |
| HUMFREY, Charles Thomas William RESIGNED | Director | 06 Dec 2008 | 03 Nov 2011 | United Kingdom | December 1947 | 31, Welford Place, Wimbledon, London, SW19 5AJ |
| JAGGER, Terence RESIGNED | Director | 24 Oct 2012 | 31 Jan 2015 | England | October 1956 | Crown Agents, St Nicholas House, St Nicholas Road, Sutton, Surrey, SM1 1EL, England |
| JAMES, Margot Cathleen RESIGNED | Director | 07 Dec 2010 | 25 Oct 2016 | United Kingdom | August 1957 | Houses Of Parliament, London, SW1A 0AA, Uk |
| JENKIN OF RODING, Charles Patrick Fleeming, The Right Hon The Lord RESIGNED | Director | | 01 Jul 1999 | | September 1926 | Home Farm, Matching Road Hatfield Heath, Bishops Stortford, Hertfordshire, CM22 7AS |
| KING, Mark Andrew RESIGNED | Director | 03 Jul 2007 | 11 Apr 2008 | England | March 1965 | Ng9 # |
| LAING, John Martin Kirby, Sir RESIGNED | Director | | 25 Jan 2002 | | January 1942 | Page Street, Mill Hill, London, NW7 2ER |
| LOEHNIS, Anthony David RESIGNED | Director | | 16 Oct 2006 | United Kingdom | March 1935 | 11 Cranleigh, 139 Ladbroke Road, London, W11 3PX |
| LORD HOWELL OF GUILDFORD, Rt Hon RESIGNED | Director | | 23 Oct 2007 | | January 1936 | Chalkdroft Farm, Penton Mewsey, Andover, Hampshire, SP11 0RL |
| MANDELSON, Peter Benjamin RESIGNED | Director | 16 Jul 2001 | 01 Nov 2004 | | October 1953 | 30 Hutton Avenue, Hartlepool, Cleveland, TS26 9PN |
| MONTYN, Justus Adriaan Picter RESIGNED | Director | 30 May 2003 | 30 Mar 2005 | | June 1940 | Little Leat, Lane End, Hambledon, Surrey, GU8 4HD |
| MOWLAM, Marjorie RESIGNED | Director | 16 Jul 1992 | 05 Aug 1997 | | September 1949 | House Of Commons, Westminster, London, SW1 0AA |
| NEEDHAM, Richard Francis, Sir RESIGNED | Director | 12 Jul 1995 | 04 Nov 2015 | England | January 1942 | The Croft House, Somerford Keynes, Cirencester, Gloucestershire, GL7 6DW |
| NIVEN, Simone RESIGNED | Director | 26 Apr 2017 | 23 Feb 2021 | England | January 1971 | 6, St. James's Square, London, SW1Y 4AD, England |
| NIXON, Edwin Ronald, Sir RESIGNED | Director | | 25 Mar 1996 | | June 1925 | National Westminster Bank Plc, 41 Lothbury, London, EC2P 2BP |
| NUNN, Christopher John RESIGNED | Director | 10 Dec 2006 | 31 Jan 2007 | England | August 1962 | 37 Victoria Road, Pembroke Cottage, Fleet, Hampshire, GU51 4DN |
| PALLISER, Arthur Michael, Sir RESIGNED | Director | | 29 Feb 1996 | | April 1922 | Samuel Motagu & Co Ltd 10 Lower Thames Street, London, EC3R 6HB |
| PARKER, Peter, Sir RESIGNED | Director | | 28 Apr 2002 | | August 1924 | 37 Gloucester Walk, London, W8 4HY |
| PHILLIPS, Tom RESIGNED | Director | 16 Sep 2002 | 12 Nov 2003 | United Kingdom | August 1960 | Greenleaves, Milton Avenue, Gerrards Cross, Buckinghamshire, SL9 8QN |
| PRIOR, Michael James Leathe, Th Rt Hon Lord Prior Pc RESIGNED | Director | | 20 May 1994 | | October 1927 | Gec Plc 1 Stanhire Gate, London, W1A 1EH |
| RADICE, Giles, Lord RESIGNED | Director | | 03 Dec 1997 | United Kingdom | October 1936 | The Long House, 3 Gelston, Grantham, NG32 2AE |
| REICH, Thomas Gwyn RESIGNED | Director | 12 Aug 2021 | 13 Nov 2023 | Japan | September 1956 | Ark Mori Building 24f, 1-12-32 Akasaka, Minato-Ku, Tokyo, 107 6024, Japan |
| RICHARDSON, David Gordon RESIGNED | Director | 14 Jul 2015 | 20 Nov 2024 | England | August 1961 | Crown Agents, St Nicholas House, St. Nicholas Road, Sutton, Surrey, SM1 1EL, England |
| RIDSDALE, Julian Errington, Sir RESIGNED | Director | | 30 Sep 2003 | | June 1915 | 12 The Boltons, London, SW10 9TD |
| SCOTT, Rosalind Carol, Baroness RESIGNED | Director | 24 Oct 2012 | 24 Oct 2013 | England | August 1957 | Belmont Cottage, The Lane, Creeting St. Peter, Ipswich, IP6 8QR, England |
| SHEARS, Michael RESIGNED | Director | 24 Jan 2005 | 15 Jun 2010 | | March 1940 | Barton House 22 The Street, Kennington, Ashford, Kent, TN24 9HB |
| SIEFF, David Daniel, The Honourable Sir RESIGNED | Director | 21 Mar 1995 | 21 Aug 1997 | | March 1939 | 47-67 Baker Street, London, W1A 1DN |
| SMITH, John, The Rt Hon RESIGNED | Director | | 16 Jul 1992 | | September 1938 | House Of Commons, Westminster, SW1A 1AA |
| SMITH, Lesley RESIGNED | Director | 13 Sep 2004 | 28 Jun 2005 | | June 1960 | 10 Donaldson Road, London, NW6 6NB |
| STEEL OF AIKWOOD, David, Lord RESIGNED | Director | 16 Jul 1992 | 01 May 1997 | | March 1938 | Aikwood Tower, Selkirk, TD7 5HJ |
| SWAREN, Thomas RESIGNED | Director | 19 May 2015 | 27 Feb 2019 | Japan | July 1959 | Bae Systems, Ark Mori Building, 24 F, 1-12-32 Akasaka, Minato-Ku, Tokyo 107-6024, Japan |
| TALBOYS, Nigel John RESIGNED | Director | 22 Jan 2017 | 31 Dec 2024 | Belgium | September 1959 | 41, Ikaroslaan 41, 1930 Zaventem, Belgium |
| TAYLOR, Stephen John RESIGNED | Director | 17 Apr 2007 | 24 Oct 2012 | England | September 1959 | 3 Willow Way, Godstone, Surrey, RH9 8NQ |
| TEVERSON, Robin, Lord RESIGNED | Director | 17 Apr 2007 | 24 Oct 2012 | England | March 1952 | Thornparks House, Tucoyse Tregony, Truro, Cornwall, TR2 5SJ |
| THOMAS, Ian Arthur RESIGNED | Director | 04 Nov 2002 | 03 Jul 2007 | | July 1946 | La Chaumiere, The Holt, Blakes Lane, Wargrave, Berkshire, RG10 9TG |
| THORNLEY, Richard Brian RESIGNED | Director | 01 Jul 2008 | 24 Oct 2013 | Japan | November 1964 | 3-7-2, Minami Azabu, Minato-Ku, Tokyo, 106-0047, Japan |
| TSUYUKUBO, Haruhiko RESIGNED | Director | 28 Oct 2014 | 17 Oct 2017 | Japan | April 1960 | 31st Floor, Kasumigaseki Bldg., Rolls-Royce Japan Co. Ltd, 3-2-5 Kasumigaseki, Chiyoda-Ku, Tokyo 100-6031, Japan |
| VALENTINE, Debra RESIGNED | Director | 28 Oct 2014 | 01 Dec 2016 | England | April 1953 | 2, Eastbourne Terrace, London, W2 6LG, England |
| WAKEFIELD, Peter George Arthur, Sir RESIGNED | Director | 16 Jul 2001 | 22 Aug 2003 | United Kingdom | May 1922 | Lincoln House 28 Montpelier Row, Twickenham, TW1 2NQ |
| WANLESS, Derek, Sir RESIGNED | Director | 22 Apr 1997 | 02 Aug 1999 | United Kingdom | September 1947 | Chapters 195 Upper Chobham Road, Camberley, Surrey, GU15 1HA |
| WARREN, David Alexander, Sir RESIGNED | Director | 04 Nov 2015 | 27 Oct 2022 | England | August 1952 | The Japan Society, 13/14 Cornwall Terrace, London, NW1 4QP |
| WEEKS, Edward John RESIGNED | Director | 19 Feb 2024 | 11 Mar 2025 | Japan | October 1971 | The Japan Society, 13/14 Cornwall Terrace, London, NW1 4QP |
| WHITE, Keith George RESIGNED | Director | 06 Feb 2006 | 17 Apr 2007 | United Kingdom | October 1948 | 8 Lymbourne Close, Belmont, Sutton, Surrey, SM2 6DX |
| WHITE, Stewart Dale RESIGNED | Director | 16 Sep 2002 | 09 Jun 2005 | | July 1951 | Church Cottage, Pangbourne Hill, Pangbourne, Reading, RG8 7AX |
| WHITEHEAD, John Stainton, Sir RESIGNED | Director | 15 Feb 1995 | 16 Oct 2006 | | September 1932 | Bracken Edge, High Pitfold, Hindhead, Surrey, GU26 6BN |
| WILFORD, Kenneth Michael, Sir RESIGNED | Director | | 16 Sep 2002 | | January 1922 | Brook Cottage, Abbotts Ann, Andover, Hampshire, SP11 7DS |
| WILLIAMS, Peter Michael, Sir RESIGNED | Director | 12 Jun 1998 | 01 Jan 2000 | United Kingdom | March 1945 | 41 Plater Drive, Oxford, Oxfordshire, OX2 6QU |
| WILSON, Mark RESIGNED | Director | 27 Feb 2019 | 20 Mar 2019 | Japan | February 1958 | Bae Systems International Ltd, Ark Mori Building 24 Floor, 1-12-32 Akasaka Minato-Ku, Tokyo, 107 6025, Japan |
| WOOLMER, Kenneth John, Lord RESIGNED | Director | 28 Jun 2005 | 07 Dec 2010 | Uk | April 1940 | 8 Ancaster Crescent, Leeds, West Yorkshire, LS16 5HS |
| WRIGHT, David John, Sir RESIGNED | Director | 04 Nov 2002 | 31 Mar 2018 | United Kingdom | June 1944 | Mellowmeads, 107 North End, Meldreth, Royston, SG8 6NX, England |
| ZEITZ, Christine Marie RESIGNED | Director | 22 Jan 2013 | 15 Jan 2015 | Australia | December 1969 | Ark Mori Building, 24f, 1-12-32 Akasaka, Minato-Ku, Tokyo, 106-0047, Japan |