| HALFORD, Amanda Christine ACTIVE | Director | 01 Jul 2026 | | United Kingdom | December 1968 | Unit 5a - Calibre Scientific House,, R-Evolution@The Advanced Manufacturing Park,, Selden Way, Catcliffe,, Rotherham,, S60 5XA, United Kingdom |
| SHAKEEL, Usman ACTIVE | Director | 01 Jul 2026 | | United States | February 1988 | Unit 5a - Calibre Scientific House,, R-Evolution@The Advanced Manufacturing Park,, Selden Way, Catcliffe,, Rotherham,, S60 5XA, United Kingdom |
| WALL, Brian Michael ACTIVE | Director | 31 Dec 2021 | | France | June 1973 | Unit 5a - Calibre Scientific House,, R-Evolution@The Advanced Manufacturing Park,, Selden Way, Catcliffe,, Rotherham,, S60 5XA, United Kingdom |
| BENNETT, Michael John RESIGNED | Secretary | 24 Dec 1993 | 24 Dec 1993 | | | Cornerstones Fairmile, Henley On Thames, Reading, Oxfordshire, RG9 2JX |
| BOUSTOULLER, Yvonne Louise RESIGNED | Secretary | 21 Dec 1992 | 31 Dec 1999 | | | Russetts, Roke, Benson, Oxfordshire, OX10 6JD |
| DUFFY, Kenneth A RESIGNED | Secretary | 31 Dec 1999 | 31 Oct 2002 | | | 34 Rue Des Essants, Les Mesnuls, 78490, France |
| WHITEWAY, Jeffrey RESIGNED | Secretary | 01 Nov 2002 | 06 Aug 2015 | | | Timberway House, 4 Oakley Road, Chinnor, Oxfordshire, OX39 4HZ |
| KEY LEGAL SERVICES (NOMINEES) LIMITED RESIGNED | Nominee Secretary | 10 Dec 1992 | 21 Dec 1992 | | | 20 Station Road, Radyr, Cardiff, CF15 8AA |
| ALLAN, James Mark RESIGNED | Director | 01 Aug 2023 | 15 Feb 2024 | United Kingdom | December 1967 | 2, Lamtarra Way, Newbury, RG14 7WB, England |
| BENNETT, Joan Margaret RESIGNED | Director | 24 Dec 1993 | 27 Jan 1994 | United Kingdom | September 1941 | Cornerstones, Fairmile Henley On Thames, Reading, Oxon, RG9 2JX |
| BROWNLEADER, Michael Daniel, Dr RESIGNED | Director | 31 Dec 2021 | 25 May 2022 | England | January 1967 | 30, Gordon Road, Windsor, Berkshire, SL4 3RH, England |
| DRURY, Michael Thomas RESIGNED | Director | 31 Dec 2021 | 29 Jul 2022 | United States | February 1964 | 15838, Doyers Drive, Huntsville, North Carolina, 28078, United States |
| DUFFY, Mark Stephan RESIGNED | Director | 21 Dec 1992 | 31 Dec 2021 | United Kingdom | February 1960 | 3, Tower Estate, Warpsgrove Lane, Chalgrove, Oxfordshire, OX44 7XZ, England |
| ESDON, Keith Stuart Garreth RESIGNED | Director | 23 Jan 2003 | 30 Sep 2005 | United Kingdom | September 1955 | 54 Chesterfield Crescent, Wing, Leighton Buzzard, Bedfordshire, LU7 0TW |
| FATHERS, Dean Harry RESIGNED | Director | 16 Jul 2010 | 31 Aug 2012 | England | June 1962 | Unit 3, Tower Industrial Park, Wargrave Lane, Chalgrove, Oxfordshire, OX44 7XZ |
| FROGGATT, Stephen Geoffrey RESIGNED | Director | 01 Nov 2002 | 31 Oct 2005 | | May 1950 | 39 Brookside, Watlington, Oxfordshire, OX49 5AQ |
| HEIDINGER, Joyce Ann RESIGNED | Director | 01 Aug 2023 | 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,, R-Evolution@The Advanced Manufacturing Park,, Selden Way, Catcliffe,, Rotherham,, S60 5XA, United Kingdom |
| KULLBACK, William Jay, Mr. RESIGNED | Director | 02 Jun 2025 | 30 Jun 2026 | United States | October 1959 | Unit 5a - Calibre Scientific House,, R-Evolution@The Advanced Manufacturing Park,, Selden Way, Catcliffe,, Rotherham,, S60 5XA, United Kingdom |
| ROGAN, Simon John RESIGNED | Director | 08 Apr 2014 | 31 Dec 2021 | United Kingdom | October 1959 | 3, Tower Estate, Warpsgrove Lane, Chalgrove, Oxfordshire, OX44 7XZ, England |
| TRAVIS, Benjamin Ross RESIGNED | Director | 31 Dec 2021 | 31 Dec 2024 | United States | October 1975 | 3211, Millstone Court, Maumee, Ohio, 43537, United States |
| WHITEWAY, Jeffrey RESIGNED | Director | 01 Nov 2002 | 08 Apr 2014 | | May 1955 | Timberway House, 4 Oakley Road, Chinnor, Oxfordshire, OX39 4HZ |
| KEY LEGAL SERVICES (NOMINEES) LIMITED RESIGNED | Nominee Director | 10 Dec 1992 | 21 Dec 1992 | | | 20 Station Road, Radyr, Cardiff, CF15 8AA |