| BALDRY, David James ACTIVE | Director | 04 Sep 2024 | | England | May 1979 | Hypnos Limited, 1 Longwick Road, Princes Risborough, Bucks, HP27 9RT, England |
| HAYFIELD, Colin John ACTIVE | Director | 06 Mar 2025 | | England | November 1955 | Hypnos Limited, 1 Longwick Road, Princes Risborough, Bucks, HP27 9RT, England |
| KEEN, James Peter George ACTIVE | Director | 23 Jun 2008 | | United Kingdom | May 1975 | Hypnos Limited, 1 Longwick Road, Princes Risborough, Bucks, HP27 9RT, England |
| GOODMAN, Geoffrey Martin RESIGNED | Secretary | | 31 Mar 2012 | | | 1, Longwick Road, Princes Risborough, Buckinghamshire, HP27 9RT, United Kingdom |
| BYRNE, Patrick Joseph RESIGNED | Director | 09 Oct 1991 | 23 Jul 1996 | United Kingdom | April 1949 | Mill Lea, Pink Road Lacey Green, Princes Risborough, Bucks, HP27 0PG |
| CAINE, Marc RESIGNED | Director | 02 Nov 2004 | 05 Jun 2008 | England | July 1936 | 3 Randolph Mews, London, W9 1AW |
| EASTOE, Robert Lincoln RESIGNED | Director | 19 Aug 2014 | 06 Nov 2020 | England | November 1961 | 1, Longwick Road, Princes Risborough, Buckinghamshire, HP27 9RT |
| GLOVER, David Michael RESIGNED | Director | | 30 Aug 1992 | | August 1927 | 5 Forge End, Amersham, Buckinghamshire, HP7 0JP |
| GOODMAN, Geoffrey Martin RESIGNED | Director | 06 Mar 1998 | 31 Mar 2012 | England | December 1945 | 1, Longwick Road, Princes Risborough, Buckinghamshire, HP27 9RT, United Kingdom |
| KEEN, Judith Mary RESIGNED | Director | 02 Nov 2004 | 06 Mar 2025 | United Kingdom | December 1944 | Hypnos Limited, 1 Longwick Road, Princes Risborough, Bucks, HP27 9RT, England |
| KEEN, Peter George RESIGNED | Director | 01 Jul 2020 | 06 Mar 2025 | England | April 1944 | Hypnos Limited, 1 Longwick Road, Princes Risborough, Bucks, HP27 9RT, England |
| KEEN, Peter George RESIGNED | Director | | 09 Oct 2018 | England | April 1944 | 1, Longwick Road, Princes Risborough, Buckinghamshire, HP27 9RT, United Kingdom |
| MOORE, James Andrew RESIGNED | Director | 01 Jul 2020 | 20 Jun 2022 | England | March 1989 | 1, Longwick Road, Princes Risborough, Buckinghamshire, HP27 9RT |
| PLUMRIDGE, Dennis Edwin RESIGNED | Director | | 14 Jul 1995 | | November 1930 | 83 Totteridge Lane, High Wycombe, Buckinghamshire, HP13 7QA |
| WARD, Stephen Hedley RESIGNED | Director | 23 Jun 2008 | 01 Jul 2020 | England | November 1952 | 1, Longwick Road, Princes Risborough, Buckinghamshire, HP27 9RT, United Kingdom |
| YULE, Stephanie Louise RESIGNED | Director | 19 Mar 2025 | 28 Mar 2025 | England | October 1973 | Hypnos Limited, 1 Longwick Road, Princes Risborough, Bucks, HP27 9RT, England |