| ROBINSON, Nigel Wayne ACTIVE | Secretary | 16 Jan 2017 | | | | Quad 1, First Floor, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, United Kingdom |
| HUXTER, Andrew David ACTIVE | Director | 14 Jan 2019 | | England | November 1969 | Quad 1, First Floor, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, United Kingdom |
| RIDER, Michael James ACTIVE | Director | 15 Jun 2023 | | United States | April 1957 | Resmed Inc., 9001 Spectrum Center Blvd, San Diego, California 92123, United States |
| BRUCE, Paul Andrew RESIGNED | Secretary | 21 Oct 2010 | 10 Jun 2011 | | | 96, Milton Park, Abingdon, Oxfordshire, OX14 4RY |
| FLICKER, Walter RESIGNED | Secretary | 19 Oct 1993 | 29 Apr 2003 | | | 11198 Montaubon Way, San Diego, California Ca 92131, FOREIGN, Usa |
| HALLETT, Michael David, Dr RESIGNED | Secretary | 19 Oct 1993 | 22 Dec 1995 | | | 26 Lockway, Drayton, Oxfordshire, OX14 4LF |
| HASTINGS, Mark Alan RESIGNED | Secretary | 04 Jun 2004 | 20 Oct 2010 | | | Stoneleigh, Crookdale Beck, Didcot, Oxfordshire, OX11 7US |
| HUXTER, Andrew David RESIGNED | Secretary | 09 Aug 2011 | 19 Aug 2014 | | | 96, Jubilee Avenue, Milton Park, Abingdon, Oxfordshire, OX14 4RY, Uk |
| JONES, Bryn Parry RESIGNED | Secretary | 19 Aug 2014 | 28 Jul 2015 | | | 96, Jubilee Avenue, Milton Park, Abingdon, Oxon, OX14 4RW |
| ROBERTS, Christopher Graham RESIGNED | Secretary | 29 Apr 2003 | 04 Jun 2004 | | | 51 Bushlands Avenue, Gordon, New South Wales, 2072, Australia |
| COMBINED SECRETARIAL SERVICES LIMITED RESIGNED | Nominee Secretary | 19 Oct 1993 | 19 Oct 1993 | | | Victoria House, 64 Paul Street, London, EC2A 4NG |
| CUTHBERTSON, Ewan Douglas RESIGNED | Director | 23 Feb 2015 | 14 Jan 2019 | United Kingdom | October 1965 | Quad 1, First Floor, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, United Kingdom |
| FARRELL, Peter Craig, Dr RESIGNED | Director | 19 Oct 1993 | 01 Jan 2008 | | June 1942 | 7220 Romero Drive, La Jolla, California, Ca 92037, Usa |
| FLICKER, Walter RESIGNED | Director | 19 Oct 1993 | 29 Apr 2003 | | April 1955 | 11198 Montaubon Way, San Diego, California Ca 92131, FOREIGN, Usa |
| GALLAHUE, Kieran RESIGNED | Director | 01 Feb 2008 | 01 Mar 2009 | | May 1963 | 4746 Shadwell Place, San Diego, California 92130, United States |
| HALLETT, Michael David, Dr RESIGNED | Director | 19 Oct 1993 | 22 Dec 1995 | | July 1958 | 6 Apsley Court 320 Woodstock Road, Oxford, Oxfordshire, OX2 7NS |
| PENDARVIS, David Brian RESIGNED | Director | 01 Mar 2009 | 15 Jun 2023 | United States | March 1959 | Quad 1, First Floor, Becquerel Avenue, Harwell Campus, Didcot, Oxfordshire, OX11 0RA, United Kingdom |
| ROBERTS, Christopher Graham RESIGNED | Director | 29 Apr 2003 | 16 Jun 2006 | | October 1953 | 51 Bushlands Avenue, Gordon, New South Wales, 2072, Australia |
| SMITH, Adrian RESIGNED | Director | 01 May 2005 | 31 May 2007 | | May 1964 | 9 Jacaranda Drive, Cabarita, New South Wales 2137, Australia |
| SOMMERVILLE, Ross William RESIGNED | Director | 01 May 2005 | 27 Feb 2015 | England | December 1954 | 2 Parkside Gardens, Winchester, Hampshire, SO22 5NA |
| COMBINED NOMINEES LIMITED RESIGNED | Nominee Director | 19 Oct 1993 | 19 Oct 1993 | | | Victoria House, 64 Paul Street, London, EC2A 4NA |
| COMBINED SECRETARIAL SERVICES LIMITED RESIGNED | Nominee Director | 19 Oct 1993 | 19 Oct 1993 | | | Victoria House, 64 Paul Street, London, EC2A 4NG |