| CROSS, Sarahjane ACTIVE | Secretary | 07 Apr 2019 | | | | Dolphin House, Commerce Way, Leighton Buzzard, Bedfordshire, LU7 4RW |
| CROSS, Sarahjane ACTIVE | Director | 07 Apr 2019 | | England | May 1977 | Dolphin House, Commerce Way, Leighton Buzzard, Bedfordshire, LU7 4RW |
| SATO, Takao, Dr ACTIVE | Director | 24 Jul 2025 | | Japan | August 1973 | Dolphin House, Commerce Way, Leighton Buzzard, Bedfordshire, LU7 4RW |
| SHINJO, Nobutaka ACTIVE | Director | 09 Apr 2018 | | Japan | February 1965 | 2-40-2 Hongo, Bunkyo-Ku, Tokyo 113-8402, Japan |
| SUGIYAMA, Tetsuya ACTIVE | Director | 09 Apr 2018 | | Japan | April 1963 | 2-40-2 Hongo, Bunkyo-Ku, Tokyo 113-8402, Japan |
| CLAMP, Elizabeth Anne RESIGNED | Secretary | | 02 Mar 1998 | | | 2 Alders End Lane, Harpenden, Hertfordshire, AL5 2HL |
| CLAMP, John Haldyn RESIGNED | Secretary | 02 Jan 2008 | 08 Feb 2017 | | | 67, Grantchester Street, Cambridge, CB3 9HZ, England |
| CLAMP, John Haldyn RESIGNED | Secretary | 02 Mar 1998 | 02 Apr 2007 | | | 28 Owlstone Road, Cambridge, CB3 9JH |
| JOHNSON, Susan RESIGNED | Secretary | 23 Jul 2015 | 14 Mar 2019 | | | Dolphin House, Commerce Way, Leighton Buzzard, Bedfordshire, LU7 4RW |
| LEDGER, Curtis Lee RESIGNED | Secretary | 02 Apr 2007 | 31 Dec 2007 | | | 23 Kestrel Way, Buckingham, Buckinghamshire, MK18 7HJ |
| ANGELL, Diane Sandra RESIGNED | Director | 09 Feb 2012 | 31 Oct 2022 | United Kingdom | July 1953 | 260a, Hyde End Road, Reading, Berkshire, RG7 1DL, United Kingdom |
| BEALE, David Michael RESIGNED | Director | | 18 Sep 1998 | | January 1951 | 1 Chesterfield Mews, Newmarket, Suffolk, CB8 8DX |
| CLAMP, Elizabeth Anne RESIGNED | Director | 10 Mar 2016 | 09 Apr 2018 | United Kingdom | July 1938 | Dolphin House, Commerce Way, Leighton Buzzard, Bedfordshire, LU7 4RW |
| CLAMP, Elizabeth Anne RESIGNED | Director | | 10 Apr 2002 | United Kingdom | July 1938 | Higher Spriddlestone Barns, Brixton, Plymouth, Devon, PL9 0DW |
| CLAMP, Geoffrey Haldyn RESIGNED | Director | | 10 Mar 2016 | | February 1933 | Higher Spriddlestone Barns, Brixton, Plymouth, Devon, PL9 0DW |
| CLAMP, John Haldyn RESIGNED | Director | 03 Dec 1996 | 01 Apr 2022 | England | April 1970 | 67, Grantchester Street, Cambridge, CB3 9HZ, England |
| DISKIN, Mark RESIGNED | Director | 15 May 2015 | 09 Apr 2018 | South Africa | September 1941 | Dolphin House, Commerce Way, Leighton Buzzard, Bedfordshire, LU7 4RW |
| DISKIN, Mark RESIGNED | Director | 19 Jul 2000 | 30 Sep 2011 | South Africa | September 1941 | Coachmans Cottage Rose Hill, Burnham, Berkshire, SL1 8NN |
| DISKIN, Sybil RESIGNED | Director | 20 Nov 2012 | 11 Nov 2015 | United Kingdom | January 1943 | Coachmans Cottage, Rose Hill, Burnham, Slough, Berks, SL1 8NN, United Kingdom |
| HARPER, David Martin RESIGNED | Director | 03 Feb 2002 | 24 May 2011 | England | January 1947 | Ladye Place, High Street, Hurley, Maidenhead, Berkshire, SL6 5NB |
| JOHNSON, Susan RESIGNED | Director | 23 Jul 2015 | 07 Mar 2019 | England | March 1969 | Dolphin House, Commerce Way, Leighton Buzzard, Bedfordshire, LU7 4RW |
| KINOSHITA, Taku RESIGNED | Director | 18 Mar 2026 | 29 Jun 2026 | Japan | April 1975 | Dolphin House, Commerce Way, Leighton Buzzard, Bedfordshire, LU7 4RW |
| KUBOTA, Shin RESIGNED | Director | 09 Apr 2018 | 18 Mar 2026 | Japan | May 1974 | 2-40-2 Hongo, Bunkyo-Ku, Tokyo 113-8402, Japan |
| KUMASAKA, Morito RESIGNED | Director | 01 May 2023 | 24 Jun 2025 | England | February 1973 | Dolphin House, Commerce Way, Leighton Buzzard, Bedfordshire, LU7 4RW |
| LOMAS, Jonathan Keith RESIGNED | Director | 31 Dec 1996 | 09 Apr 2018 | United Kingdom | April 1970 | Church House, 50 High Street, Chippenham, Cambridgeshire, CB7 5PP |
| MANICK, Ian Lawrence RESIGNED | Director | | 19 Nov 2001 | | March 1943 | Hilpet, No 10 Moka Estate, Maraval, Trinidad, FOREIGN, West Indies |
| NEWELL, Richard Gordon, Dr RESIGNED | Director | 12 Jul 2006 | 11 Nov 2015 | United Kingdom | August 1942 | Old Beach Farm Green End, Landbeach, Cambridge, Cambridgeshire, CB4 4ED |
| POLONYI, Philipp Jens Andre RESIGNED | Director | 01 Apr 2022 | 31 May 2023 | England | December 1986 | Dolphin House, Commerce Way, Leighton Buzzard, Bedfordshire, LU7 4RW |
| URAKABE, Masahiro RESIGNED | Director | 09 Apr 2018 | 24 Jun 2025 | Japan | June 1962 | 2-40-2 Hongo, Bunkyo-Ku, Tokyo 113 8402, Japan |
| WRAY, Colin Malcolm RESIGNED | Director | 22 Oct 1994 | 31 Dec 1997 | United Kingdom | December 1956 | Bay Tree Cottage, 6 North Common, Redbourn, Hertfordshire, AL3 7DA |