| WHYTE, Victoria Anne ACTIVE | Secretary | 10 Feb 1999 | | | | 79, New Oxford Street, London, WC1A 1DG, United Kingdom |
| DAVIDSON, Alistair Robert ACTIVE | Director | 31 Dec 2025 | | United Kingdom | December 1972 | 79, New Oxford Street, London, WC1A 1DG, United Kingdom |
| EDINBURGH PHARMACEUTICAL INDUSTRIES LIMITED ACTIVE | Director | 31 Jan 2001 | | | | Shewalton Road, Irvine, Ayrshire, KA11 5AP |
| GLAXO GROUP LIMITED ACTIVE | Director | 31 Jan 2001 | | | | Gsk Medicines Research Centre, Gunnels Wood Road, Stevenage, SG1 2NY, England |
| BICKNELL, Simon Michael RESIGNED | Secretary | 17 Apr 1998 | 10 Feb 1999 | | | 980, Great West Road, Brentford, Middlesex, TW8 9GS |
| BOLTON, Jonathan Mark RESIGNED | Secretary | 14 Aug 1997 | 08 Apr 1998 | | | Flat 21 Skillen Lodge, 552 Uxbridge Road, Pinner, Middlesex, HA3 3PR |
| BOLTON, Jonathan Mark RESIGNED | Secretary | | 09 Jun 1994 | | | 84 Aldborough Road, Seven Kings, Ilford, Essex, IG3 8EY |
| CHRISTIAN, Christopher Lindsay RESIGNED | Secretary | 18 Apr 1996 | 14 Aug 1997 | | | 16 Devoncroft Gardens, Twickenham, Middlesex, TW1 3PB |
| SKELDING, Sandra Grace Marie RESIGNED | Secretary | 09 Jun 1994 | 18 Apr 1996 | | | 16 Devoncroft Gardens, Twickenham, Middlesex, TW1 3PB |
| BAILEY, Michael John RESIGNED | Director | 14 Jun 1995 | 30 Apr 2001 | England | November 1942 | Dolphins, Firfields, Weybridge, Surrey, KT13 0UD |
| BAXTER, Jeffrey Royston RESIGNED | Director | 17 Jan 1997 | 10 Feb 1999 | | July 1961 | 21 Manor Road, Ashford, Middlesex, TW15 2SL |
| BORGER, James RESIGNED | Director | 25 Feb 2019 | 02 Mar 2020 | England | January 1963 | 980, Great West Road, Brentford, Middlesex, TW8 9GS |
| BURNS, Alan George RESIGNED | Director | 03 Dec 2012 | 03 Apr 2019 | England | March 1975 | 980, Great West Road, Brentford, Middlesex, TW8 9GS, England |
| DAVIES, Derek RESIGNED | Director | 16 Aug 2010 | 14 Dec 2012 | England | June 1963 | 980, Great West Road, Brentford, Middlesex, TW8 9GS |
| DUBIANSKIJ, Oleg RESIGNED | Director | 31 Jan 2017 | 13 Feb 2019 | United Kingdom | February 1972 | 980, Great West Road, Brentford, Middlesex, TW8 9GS |
| GLYNN-WILLIAMS, William Ifan RESIGNED | Director | | 31 Oct 1993 | | October 1933 | Fleet View, The Pound, Cookham, Berkshire, SL6 9QD |
| GRIST, Ashley Alexander RESIGNED | Director | 09 Sep 2009 | 20 Oct 2010 | United Kingdom | September 1965 | 980 Great West Road, Brentford, Middlesex, TW8 9GS |
| HENNAH, Adrian RESIGNED | Director | 11 Nov 1993 | 17 Jul 1995 | | November 1957 | 67 Copthorne Road, Croxley Green, Rickmansworth, Hertfordshire, WD3 4AH |
| HURT, Douglas Malcolm RESIGNED | Director | 10 Feb 1999 | 31 Jan 2001 | | June 1956 | 34 Berkeley Square, London, W1J 5AA |
| KEARNEY, John Patrick RESIGNED | Director | 10 Feb 1999 | 19 Jul 1999 | | March 1958 | Wilmcote Green End Road, Radnage, High Wycombe, Buckinghamshire, HP14 4BZ |
| LANCE, Sean Patrick RESIGNED | Director | | 18 Apr 1994 | United Kingdom | August 1947 | 25a Warrington Crescent, London, W9 1ED |
| LAPIONTE, Jacques Regean RESIGNED | Director | 18 Apr 1994 | 31 Jan 1997 | | November 1946 | Morning Dove, Beech Waye, Gerrards Cross, Buckinghamshire, SL9 8BL, Canada |
| LECOUILLIARD, Joanna Susan RESIGNED | Director | 10 Feb 1999 | 31 Jan 2001 | | November 1963 | Willow Tree Cottage, Spinning Wheel Lane, Binfield, Bracknell, Berkshire, RG42 5QH |
| LYNCH, Ciara Martha RESIGNED | Director | 02 Mar 2020 | 31 Dec 2025 | England | July 1968 | 79, New Oxford Street, London, WC1A 1DG, United Kingdom |
| MORROW, George James RESIGNED | Director | 31 Jan 1997 | 10 Feb 1999 | | March 1952 | 34 Berkeley Square, London, W1X 6JT |
| NIGHTINGALE, Ronald RESIGNED | Director | | 30 Jun 1995 | | January 1937 | Mill Barn, Church Hill, Little Milton, Oxfordshire, OX44 7QD |
| POWELL, Stephen John RESIGNED | Director | 14 Jun 1995 | 10 Feb 1999 | United Kingdom | July 1958 | Abney Gate, Hedsor Road, Bourne End, Buckinghamshire, SL8 5DH |