| HALFORD, Amanda Christine ACTIVE | Director | 01 Jul 2026 | | United Kingdom | December 1968 | Unit 5a - Calibre Scientific House, Selden Way, Catcliffe, Rotherham, S60 5XA, England |
| SHAKEEL, Usman ACTIVE | Director | 01 Jul 2026 | | United States | February 1988 | Unit 5a - Calibre Scientific House, Selden Way, Catcliffe, Rotherham, S60 5XA, England |
| WALL, Brian Michael ACTIVE | Director | 05 Jan 2024 | | France | June 1973 | Unit 5a - Calibre Scientific House, Selden Way, Catcliffe, Rotherham, S60 5XA, England |
| HEPBURN, Brian William RESIGNED | Secretary | 20 Mar 2001 | 27 Jan 2003 | | | 7 The Nightingales, Uckfield, East Sussex, TN22 5ND |
| PAGE, Atillia RESIGNED | Secretary | 01 Apr 1993 | 01 Dec 1994 | | | Woodside Cottage Easons Green, Framfield, Uckfield, East Sussex, TN22 5RE |
| PAGE, Attilia Natalia RESIGNED | Secretary | 14 Jun 2017 | 05 Jan 2024 | | | Mytogen House, 11 Browning Road, Heathfield, East Sussex, TN21 8DB, England |
| TUCKER, Lee Francis RESIGNED | Secretary | 01 May 2003 | 14 Jun 2017 | | | Mytogen House, 11 Browning Road, Heathfield, East Sussex, TN21 8DB, England |
| TUCKER, Lee Francis RESIGNED | Secretary | 01 Dec 1994 | 20 Mar 2001 | | | Briar Banks, Hailsham Road,, Herstmonceux, BN27 4JX |
| TEMPLE SECRETARIES LIMITED RESIGNED | Nominee Secretary | 14 Jan 1993 | 19 Jan 1993 | | | 788-790 Finchley Road, London, NW11 7TJ |
| ALLAN, James Mark RESIGNED | Director | 05 Jan 2024 | 15 Feb 2024 | United Kingdom | December 1967 | 2, Lamtarra Way, Newbury, RG14 7WB, England |
| BATCHELOR, Alexander James RESIGNED | Director | 08 Dec 1995 | 25 Jul 1997 | | February 1970 | 82 Whitby Road, Ruislip, Middlesex, HA4 9DR |
| DAVIS, Steve Michael RESIGNED | Director | 31 Jan 2002 | 08 Apr 2004 | | July 1958 | 15 Egles Grove, West Park, Uckfield, East Sussex, TN22 2BY |
| HEIDINGER, Joyce Ann RESIGNED | Director | 05 Jan 2024 | 31 May 2025 | United States | May 1965 | 6201, Trust Drive, Holland, Ohio, 43523, United States |
| KADIA, Siddhartha RESIGNED | Director | 01 Jan 2025 | 30 Jun 2026 | United States | August 1969 | Unit 5a - Calibre Scientific House, Selden Way, Catcliffe, Rotherham, S60 5XA, England |
| KULLBACK, William Jay, Mr. RESIGNED | Director | 02 Jun 2025 | 30 Jun 2026 | United States | October 1959 | Unit 5a - Calibre Scientific House, Selden Way, Catcliffe, Rotherham, S60 5XA, England |
| MARRIOTT, Stephen Paul RESIGNED | Director | 23 May 2018 | 01 Aug 2019 | England | July 1955 | Mytogen House, 11 Browning Road, Heathfield, East Sussex, TN21 8DB, England |
| NUTTALL, James, Dr RESIGNED | Director | 23 May 2018 | 05 Jan 2024 | England | August 1979 | Mytogen House, 11 Browning Road, Heathfield, East Sussex, TN21 8DB, England |
| PAGE, Brian John, Dr RESIGNED | Director | 25 Jun 1997 | 05 Jan 2024 | England | September 1950 | Mytogen House, 11 Browning Road, Heathfield, East Sussex, TN21 8DB, England |
| PAGE, Kenneth Roy RESIGNED | Director | 01 Apr 1993 | 26 Jun 1997 | | September 1925 | 39 Essex Street, Newbury, Berkshire, RG14 6QR |
| RIDLEY, Andrew, Dr RESIGNED | Director | 23 May 2018 | 09 Sep 2019 | England | September 1978 | Mytogen House, 11 Browning Road, Heathfield, East Sussex, TN21 8DB, England |
| STURGESS, Patricia Katherine RESIGNED | Director | 23 May 2018 | 25 Mar 2020 | England | November 1975 | Mytogen House, 11 Browning Road, Heathfield, East Sussex, TN21 8DB, England |
| TRAVIS, Benjamin Ross RESIGNED | Director | 05 Jan 2024 | 31 Dec 2024 | United States | October 1975 | C/O Stonecalibre Llc, 2049 Century Park East Suite 2550, Los Angeles, California, 90067, United States |
| TUCKER, Lee Francis RESIGNED | Director | 14 Jul 1997 | 31 Dec 2003 | United Kingdom | October 1963 | Briar Banks, Hailsham Road,, Herstmonceux, BN27 4JX |
| COMPANY DIRECTORS LIMITED RESIGNED | Nominee Director | 14 Jan 1993 | 19 Jan 1993 | | | 788-790 Finchley Road, London, NW11 7TJ |