| BALMER, John Heriot ACTIVE | Director | 22 Oct 2020 | | England | March 1960 | 3, Midas House, Calleva Park, Aldermaston, Reading, Berkshire, RG7 8EA |
| HILL, Philip Nicholas Cuthbertson ACTIVE | Director | 22 Oct 2020 | | England | March 1963 | 3, Midas House, Calleva Park, Aldermaston, Reading, Berkshire, RG7 8EA |
| O'NEILL, John Stafford ACTIVE | Director | 22 Oct 2020 | | England | June 1958 | 3, Midas House, Calleva Park, Aldermaston, Reading, Berkshire, RG7 8EA |
| WATKISS, Neil Robert ACTIVE | Director | 22 Oct 2020 | | England | March 1984 | 3, Midas House, Calleva Park, Aldermaston, Reading, Berkshire, RG7 8EA |
| WARNER, Sian RESIGNED | Secretary | 24 Jul 2015 | 14 Dec 2015 | | | 3, Midas House, Calleva Park, Aldermaston, Reading, Berkshire, RG7 8EA, England |
| OLSWANG COSEC LIMITED RESIGNED | Secretary | 05 Nov 2009 | 26 Mar 2010 | | | 90, High Holborn, London, WC1V 6XX |
| BELL, Andrew Richard RESIGNED | Director | 26 Mar 2010 | 26 Mar 2010 | United Kingdom | November 1961 | 3, Midas House, Calleva Park Aldermaston, Reading, Berkshire, RG7 8EA |
| BELL, Andrew Richard RESIGNED | Director | 26 Mar 2010 | 17 Jul 2015 | United Kingdom | November 1961 | 3, Calleva Park, Aldermaston, Reading, RG7 8EA, England |
| GONSZOR, Charles Patterson RESIGNED | Director | 17 Aug 2015 | 31 Dec 2018 | United Kingdom | February 1952 | 3, Midas House, Calleva Park, Aldermaston, Reading, Berkshire, RG7 8EA, England |
| GURALP, Cansun Mustafa RESIGNED | Director | 26 Mar 2010 | 20 Jan 2015 | United Kingdom | June 1952 | 3, Midas House, Calleva Park Aldermaston, Reading, Berkshire, RG7 8EA |
| LYDDON, Christopher Raymond RESIGNED | Director | 08 Oct 2020 | 06 Jun 2026 | France | February 1967 | 3, Midas House, Calleva Park, Aldermaston, Reading, Berkshire, RG7 8EA |
| MACKIE, Christopher Alan RESIGNED | Director | 05 Nov 2009 | 26 Jan 2010 | United Kingdom | February 1960 | 90, High Holborn, London, WC1V 6XX |
| PEARCEY, Christopher James RESIGNED | Director | 22 Oct 2020 | 28 Nov 2025 | England | May 1964 | 3, Midas House, Calleva Park, Aldermaston, Reading, Berkshire, RG7 8EA |
| PERRY, Martin Gordon RESIGNED | Director | 26 Jan 2010 | 26 Mar 2010 | United Kingdom | January 1962 | Vine Cottage, Winkfield Lane, Winkfield, Windsor, Berkshire, SL4 4QS |
| POTTS, Christopher Graeme, Dr RESIGNED | Director | 01 Dec 2014 | 24 Apr 2024 | England | April 1956 | 3, Midas House, Calleva Park, Aldermaston, Reading, Berkshire, RG7 8EA, England |
| WALL, Anthony John RESIGNED | Director | 26 Jan 2010 | 08 Aug 2011 | England | April 1958 | Two & A Half, Faringdon Road, Southmoor, Abingdon, Oxfordshire, OX13 5BH |
| OLSWANG DIRECTORS 1 LIMITED RESIGNED | Director | 05 Nov 2009 | 26 Jan 2010 | | | 90, High Holborn, London, WC1V 6XX |
| OLSWANG DIRECTORS 2 LIMITED RESIGNED | Director | 05 Nov 2009 | 26 Jan 2010 | | | 90, High Holborn, London, WC1V 6XX |