| BYRNE, Patricia Frances ACTIVE | Director | 03 Aug 2021 | | United Kingdom | March 1974 | Arc Uxbridge, Sanderson Road, New Denham, Denham, Buckinghamshire, UB8 1DH, United Kingdom |
| HOWELLS, Ian John ACTIVE | Director | 12 Oct 2015 | | United Kingdom | July 1950 | Uxbridge Business Park, Sanderson Road, Uxbridge, Middlesex, UB8 1DH, United Kingdom |
| JONES, Gareth ACTIVE | Director | 13 Oct 2021 | | United Kingdom | June 1979 | Arc Uxbridge, Sanderson Road, New Denham, Denham, Buckinghamshire, UB8 1DH, United Kingdom |
| LUCAS-LEE, Daphne ACTIVE | Director | 13 Oct 2021 | | United Kingdom | November 1961 | Arc Uxbridge, Sanderson Road, New Denham, Denham, Buckinghamshire, UB8 1DH, United Kingdom |
| PATEL, Ravi Indra ACTIVE | Director | 31 Jul 2025 | | United States | August 1984 | Arc Uxbridge, Sanderson Road, New Denham, Denham, Buckinghamshire, UB8 1DH, United Kingdom |
| TOBYN, Michael John ACTIVE | Director | 25 Oct 2021 | | United Kingdom | August 1968 | Arc Uxbridge, Sanderson Road, New Denham, Denham, Buckinghamshire, UB8 1DH, United Kingdom |
| BROSTER, Walter George RESIGNED | Secretary | | 31 Jan 1993 | | | Bristol Myer Squibb House 141-149 Staines Road, Hounslow, Middlesex, TW3 3JA |
| COSTELLO, Simon James RESIGNED | Secretary | 06 Jul 2004 | 01 Jun 2006 | | | Uxbridge Business Park, Sanderson Road, Uxbridge, Middlesex, UB8 1DH |
| COX, Keith Anthony RESIGNED | Secretary | 01 Feb 1993 | 04 Nov 1998 | | | 26 Maplefield, Park Street, St Albans, Hertfordshire, AL2 2BG |
| HUGHES, Alison Sian RESIGNED | Secretary | 27 Sep 2003 | 06 Jul 2004 | | | 7 Lindisfarne Avenue, Stanney Oaks, Little Stanney, Cheshire |
| JACKSON, Alastair John William RESIGNED | Secretary | 04 Nov 1998 | 22 Mar 2001 | | | Uxbridge Business Park, Sanderson Road, Uxbridge, Middlesex, UB8 1DH |
| SINGARAYER, Diella Natasha RESIGNED | Secretary | 01 Jun 2006 | 07 Apr 2008 | | | Uxbridge Business Park, Sanderson Road, Uxbridge, Middlesex, UB8 1DH |
| WILSON, Janet Anne RESIGNED | Secretary | 23 Mar 2001 | 26 Sep 2003 | | | 14 Park Way, Ruislip, Middlesex, HA4 8NY |
| CITCO MANAGEMENT (UK) LIMITED RESIGNED | Secretary | 01 Jan 2024 | 15 Jun 2025 | | | 7, Albemarle Street, London, W1S 4HQ, England |
| PETERSHILL SECRETARIES LIMITED RESIGNED | Secretary | 11 Jan 2019 | 01 Jan 2024 | | | 1, Chamberlain Square Cs, Birmingham, B3 3AX, United Kingdom |
| SLC REGISTRARS LIMITED RESIGNED | Secretary | 07 Apr 2008 | 11 Jan 2019 | | | 42-50, Hersham Road, Walton-On-Thames, Surrey, KT12 1RZ, United Kingdom |
| ALLAKER, Stephen RESIGNED | Director | 16 Aug 2006 | 12 Mar 2026 | | February 1959 | Uxbridge Business Park, Sanderson Road, Uxbridge, Middlesex, UB8 1DH |
| BROSTER, Walter George RESIGNED | Director | | 31 Jan 1993 | | May 1933 | 25 Orchard Road, Old Windsor, Windsor, Berkshire, SL4 2RZ |
| BUCHANAN, James Macalister RESIGNED | Director | 01 Nov 1993 | 31 Mar 1999 | United Kingdom | June 1952 | Bramleys, The Common, Winchmore Hill, Buckinghamshire, HP7 0PN |
| CHADWICK, Karen RESIGNED | Director | 01 May 2007 | 15 Jun 2011 | | March 1967 | Uxbridge Business Park, Sanderson Road, Uxbridge, Middlesex, UB8 1DH |
| CHAPMAN, Robert Bingham RESIGNED | Director | 17 May 1994 | 05 Mar 2002 | | July 1949 | 511 East 80th Street, Apartment 12f, New York City, New York, 10021, Usa |
| COTTRELL, Geoffrey Harold RESIGNED | Director | 01 Aug 2003 | 20 Mar 2023 | | December 1950 | Uxbridge Business Park, Sanderson Road, Uxbridge, Middlesex, UB8 1DH |
| COX, Keith Anthony RESIGNED | Director | 01 Feb 1993 | 05 Oct 1993 | | October 1943 | 26 Maplefield, Park Street, St Albans, Hertfordshire, AL2 2BG |
| CUNNINGHAM, Norman John RESIGNED | Director | 04 Sep 1997 | 31 Dec 1999 | | January 1936 | 2 Pen Y Maes, Buckley, Flintshire, CH7 2QE |
| DICKINSON, Gary RESIGNED | Director | | 31 Jan 1997 | | January 1952 | Innisfree Priory Road, Gerrards Cross, Buckinghamshire, SL9 8SB |
| DUFFY, Christopher RESIGNED | Director | 16 Aug 2006 | 01 Nov 2007 | | January 1964 | Uxbridge Business Park, Sanderson Road, Uxbridge, Middlesex, UB8 1DH |
| FORRESTER, Jeffrey RESIGNED | Director | 16 Aug 2006 | 19 May 2007 | | December 1948 | Global Development Centre First, Avenue Deeside Industrial Park, Deeside, Flintshire, CH5 2NU |
| GRISIN, Scott Andrew RESIGNED | Director | 21 Jun 2012 | 14 Oct 2021 | United States | April 1974 | Uxbridge Business Park, Sanderson Road, Uxbridge, Middlesex, UB8 1DH, United Kingdom |
| HALL, Anthony Robert RESIGNED | Director | | 17 May 1994 | | November 1938 | 30 Grossett Road, Riverside, Connecticut 06878, FOREIGN, Usa |
| HALL, Michael David RESIGNED | Director | 16 Oct 2001 | 31 Dec 2001 | United Kingdom | September 1955 | 3 Castle Way, Dodleston, Chester, Cheshire, CH4 9NX |
| HALL, Michael David RESIGNED | Director | 29 Mar 1996 | 15 Oct 2001 | United Kingdom | September 1955 | 3 Castle Way, Dodleston, Chester, Cheshire, CH4 9NX |
| HAMLEN, Gwynne RESIGNED | Director | 01 Apr 1999 | 12 Jun 2008 | | November 1959 | Uxbridge Business Park, Sanderson Road, Uxbridge, Middlesex, UB8 1DH |
| HANNAY, David Robert RESIGNED | Director | | 20 Oct 1993 | | May 1947 | Penlan Frith Hill Road, Godalming, Surrey, GU7 2ED |
| HANNAY, David Robert RESIGNED | Director | | 20 Oct 1993 | | May 1947 | Penlan Frith Hill Road, Godalming, Surrey, GU7 2ED |
| HINKSON, Peter RESIGNED | Director | | 20 Oct 1993 | | October 1955 | 73 Burgoyne Road, Sunbury On Thames, Middlesex, TW16 7PS |
| HINKSON, Peter RESIGNED | Director | | 20 Oct 1993 | | October 1955 | 73 Burgoyne Road, Sunbury On Thames, Middlesex, TW16 7PS |
| HOWELLS, Ian John RESIGNED | Director | 01 Jan 2002 | 01 Oct 2015 | United Kingdom | July 1950 | Lakewood, Herons Way, Chester Business Park, Wrexham Road, Chester, CH4 9QW, United Kingdom |
| IRWIN, Frank Robert RESIGNED | Director | 04 Sep 1997 | 10 May 2005 | | December 1940 | 9 Ryland Park, Thingwall, Wirral, Merseyside, L61 9QJ |
| JACKSON, Alastair John William RESIGNED | Director | | 13 Mar 2007 | | June 1941 | Uxbridge Business Park, Sanderson Road, Uxbridge, Middlesex, UB8 1DH |
| JEFFERIS, Christopher John RESIGNED | Director | 27 Sep 1993 | 04 May 2001 | England | November 1958 | 19 Oak Tree Road, Reading, Berkshire, RG31 6JU |
| JOHNSON, Helen Sandra RESIGNED | Director | 01 Oct 2015 | 11 Oct 2021 | United Kingdom | July 1965 | Bristol-Myers Squibb Pharmaceuticals Limited, Reeds Lane, Moreton, Wirral, CH46 1QW, United Kingdom |
| JONES, Kevin RESIGNED | Director | 09 May 2001 | 20 Oct 2005 | | May 1958 | 4 Westend Terrace, Ruabon, Ruabonm, Clwyd, LL14 6EA |
| LAWSON, James RESIGNED | Director | | 28 Feb 1995 | Gbr | April 1931 | 6 Fullarton Crescent, Troon, Ayrshire, KA10 6LL |
| LEE, Deanna RESIGNED | Director | 05 Mar 2002 | 31 Mar 2010 | | December 1954 | Uxbridge Business Park, Sanderson Road, Uxbridge, Middlesex, UB8 1DUH |
| LUCAS-LEE, Daphne RESIGNED | Director | 09 Sep 2009 | 31 Mar 2020 | United Kingdom | November 1961 | Bristol-Myers Squibb, Pharmaceuticals Ltd, Uxbridge Business Park, Sanderson Road, Uxbridge, UB8 1DH |
| MACDONALD, Andrew Stewart RESIGNED | Director | 19 Jun 2007 | 14 Apr 2011 | | August 1952 | Uxbridge Business Park, Sanderson Road, Uxbridge, Middlesex, UB8 1DH |
| MAITLAND, Alison RESIGNED | Director | 04 Nov 1998 | 31 Jul 2009 | | November 1962 | Uxbridge Business Park, Sanderson Road, Uxbridge, Middlesex, UB8 1DH |
| MOSS, David RESIGNED | Director | | 21 Mar 1993 | | May 1946 | 2 Plough Farm Close, Ruislip, Middlesex, HA4 7GH |
| NICHOLSON, Jane RESIGNED | Director | 04 Sep 1997 | 16 Aug 2006 | | June 1942 | Uxbridge Business Park, Sanderson Road, Uxbridge, Middlesex, UB8 1DH |
| RAMNARINE, Robert RESIGNED | Director | 01 Apr 2010 | 21 Jun 2012 | United States | January 1967 | Uxbridge Business Park, Sanderson Road, Uxbridge, Middlesex, UB8 1DH |
| SARAOGI, Ashish RESIGNED | Director | 01 Jan 2022 | 31 Jul 2025 | United States | March 1977 | 9, Roszel Road, Princeton, 08540, United States |
| SLOAN, Kenneth RESIGNED | Director | | 29 Mar 1996 | | August 1951 | 296 Canterbury Lane, Fairfield, Ct 06430, FOREIGN, Usa |
| SUMMERS, David George RESIGNED | Director | 04 Jan 2000 | 31 Dec 2000 | | May 1946 | 29 Cannon Way, Higher Kinnerton, Flintshire, CH4 9PG |
| THARP, Charles RESIGNED | Director | | 29 Mar 1996 | | February 1951 | 867 Stillwater Road, Stamford, Connecticut 06902, FOREIGN, Usa |
| TIBBETTS, David Eric RESIGNED | Director | 26 Nov 2012 | 12 Oct 2015 | United Kingdom | January 1951 | Uxbridge Business Park, Sanderson Road, Uxbridge, Middlesex, UB8 1DH, United Kingdom |
| TIMMINS, Peter RESIGNED | Director | 12 Jun 2008 | 02 Jan 2013 | | December 1950 | Reeds Lane, Moreton, Wirral, Merseyside, CH46 1QW |
| TOBYN, Michael John RESIGNED | Director | 09 Sep 2009 | 11 Oct 2021 | | August 1968 | Bristol-Myers Squibb, Reeds Lane, Moreton, CH46 1QW |
| WAINWRIGHT, Terence RESIGNED | Director | 15 Jun 2011 | 26 Nov 2012 | England | July 1952 | Uxbridge Business Park, Sanderson Road, Uxbridge, Middlessex, UB8 1DH, United Kingdom |
| WAINWRIGHT, Terence RESIGNED | Director | 01 Nov 2007 | 09 Sep 2009 | | July 1952 | Uxbridge Business Park, Sanderson Road, Uxbridge, Middlesex, UB8 1DH |
| WILLIAMS, Michael Robert RESIGNED | Director | 03 Aug 1993 | 24 Jan 1996 | | January 1960 | 2 Quince Tree Way, Hook, Hampshire, RG27 9SG |