| GAO, Xiaoming ACTIVE | Director | 19 Jan 2022 | | United Kingdom | September 1983 | 1-5, Barton Lane, Abingdon Science Park, Abingdon, Oxfordshire, OX14 3NB |
| LIU, Jie ACTIVE | Director | 19 Jan 2022 | | China | November 1968 | 21 F, Unit A, Building 7, Shenzhen International Innovation Valley, Liuxin Fourth Street, Xili, Nanshan District, Shenzhen, China |
| MOSS, Linda Jane ACTIVE | Director | 29 Apr 2019 | | United Kingdom | December 1966 | 1-5, Barton Lane, Abingdon Science Park, Abingdon, Oxfordshire, OX14 3NB |
| XIAO, Tianshi ACTIVE | Director | 28 Oct 2022 | | United Kingdom | June 1969 | 1-5, Barton Lane, Abingdon Science Park, Abingdon, Oxfordshire, OX14 3NB |
| ZHONG, Yaoqi ACTIVE | Director | 19 Jan 2022 | | United Kingdom | December 1976 | 1-5, Barton Lane, Abingdon Science Park, Abingdon, Oxfordshire, OX14 3NB |
| FRANKLIN, Stuart Kenneth RESIGNED | Secretary | 15 Jun 2012 | 15 Apr 2019 | | | 1-5, Barton Lane, Abingdon Science Park, Abingdon, Oxfordshire, OX14 3NB, United Kingdom |
| HARWOOD SMITH, Richard Martin RESIGNED | Secretary | 30 Apr 2007 | 15 Jun 2012 | | | Abingdon Science Park, Barton Lane, Abingdon, OX14 3PH |
| RAE, John Lawrence RESIGNED | Secretary | 18 Dec 2002 | 27 May 2003 | | | 24 Newland Mill, Witney, Oxfordshire, OX28 3HH |
| A B & C SECRETARIAL LIMITED RESIGNED | Nominee Secretary | 23 Jul 1996 | 18 Dec 2002 | | | 100 Barbirolli Square, Manchester, M2 3AB |
| COBBETTS (SECRETARIAL) LIMITED RESIGNED | Secretary | 27 May 2003 | 30 Apr 2007 | | | Ship Canal House, King Street, Manchester, M2 4WB |
| ARMSTRONG, Simon John RESIGNED | Director | 16 Dec 2004 | 15 Dec 2008 | United Kingdom | May 1962 | Orchard House, Heatherwold, Newtown, Newbury, Berkshire, RG20 9BG |
| FRANKLIN, Stuart Kenneth RESIGNED | Director | 24 Feb 2014 | 15 Apr 2019 | England | February 1976 | 1-5, Barton Lane, Abingdon Science Park, Abingdon, Oxfordshire, OX14 3NB, United Kingdom |
| GIL-RODRIGUEZ, Ian Edward RESIGNED | Director | 22 Jun 2009 | 16 Aug 2011 | England | November 1963 | Abingdon Science Park, Barton Lane, Abingdon, OX14 3PH |
| GUPTA, Aditya RESIGNED | Director | 21 Aug 2015 | 27 Jun 2019 | India | August 1969 | 1-5, Barton Lane, Abingdon Science Park, Abingdon, Oxfordshire, OX14 3NB |
| HARWOOD SMITH, Richard Martin RESIGNED | Director | 07 Jun 2005 | 30 Jun 2012 | England | September 1953 | Abingdon Science Park, Barton Lane, Abingdon, OX14 3PH |
| JINDAL, Ajay RESIGNED | Director | 21 Aug 2015 | 19 Jan 2022 | India | February 1974 | 1-5, Barton Lane, Abingdon Science Park, Abingdon, Oxfordshire, OX14 3NB |
| KELLY, Maxwell RESIGNED | Director | 14 Jun 2007 | 12 Aug 2011 | England | October 1963 | Abingdon Science Park, Barton Lane, Abingdon, OX14 3PH |
| KHURANA, Sunil Kumar RESIGNED | Director | 21 Aug 2015 | 19 Jan 2022 | India | August 1961 | 1-5, Barton Lane, Abingdon Science Park, Abingdon, Oxfordshire, OX14 3NB |
| KRISHNAMOORTHY, Guruswamy RESIGNED | Director | 29 Apr 2019 | 28 Oct 2022 | England | May 1971 | 1-5, Barton Lane, Abingdon Science Park, Abingdon, Oxfordshire, OX14 3NB |
| LEYLAND, Peter Anthony RESIGNED | Director | 18 Aug 2009 | 31 Mar 2011 | United Kingdom | May 1955 | Abingdon Science Park, Barton Lane, Abingdon, OX14 3PH |
| MACMILLAN, Anne Elizabeth RESIGNED | Director | 23 Dec 2009 | 27 Jul 2012 | England | November 1960 | 1-5, Barton Lane, Abingdon Science Park, Abingdon, Oxfordshire, OX14 3NB, United Kingdom |
| MOON, Stephen Edward RESIGNED | Director | 01 Apr 2011 | 21 Jan 2016 | England | February 1970 | 1-5, Barton Lane, Abingdon Science Park, Abingdon, Oxfordshire, OX14 3NB, United Kingdom |
| NAGPAL, Praveen Kumar RESIGNED | Director | 27 Jun 2019 | 19 Jan 2022 | India | August 1972 | Bpl Medical Technologies Pvt Ltd, 11th Km, Arakere, Main Banerghatta Road, Bangalore, 560076, India |
| NANDA, Harsh RESIGNED | Director | 21 Aug 2015 | 07 Mar 2020 | India | May 1979 | 1-5, Barton Lane, Abingdon Science Park, Abingdon, Oxfordshire, OX14 3NB |
| PRICE, William Frederick Ernest RESIGNED | Director | 14 Nov 1996 | 01 Jun 2000 | United Kingdom | November 1947 | Willowbrook 20 High Street, Wheatley, Oxford, Oxfordshire, OX33 1XX |
| RAE, John Lawrence RESIGNED | Director | 30 Sep 1996 | 07 Jun 2005 | | October 1947 | 24 Newland Mill, Witney, Oxfordshire, OX28 3HH |
| TUDOR, Peter Hugh RESIGNED | Director | 10 Sep 1996 | 18 Oct 2004 | United Kingdom | April 1956 | Mill Farm House, Black Bourton, Bampton, Oxfordshire, OX18 2PE |
| WALSH, Julia Maria, Dr RESIGNED | Director | 01 Jun 2000 | 18 Dec 2002 | Uk | November 1948 | Wind In The Willows, Moorhouse Farm Lane Lower Road, Higher Denham, Bucks, UB8 5EN |
| WATKINS, Andrew Bryan RESIGNED | Director | 14 Jun 2007 | 31 Oct 2009 | England | September 1961 | Abingdon Science Park, Barton Lane, Abingdon, OX14 3PH |
| WOND, Geoffrey Ian RESIGNED | Director | 30 Sep 1996 | 28 Sep 1998 | | February 1946 | 20, West Ilsley, Newbury, Berkshire, RG20 7AR |
| WORRALLO, Peter Anthony RESIGNED | Director | 12 Sep 2005 | 30 Jun 2023 | England | March 1962 | 1-5, Barton Lane, Abingdon Science Park, Abingdon, Oxfordshire, OX14 3NB, United Kingdom |
| INHOCO FORMATIONS LIMITED RESIGNED | Nominee Director | 23 Jul 1996 | 10 Sep 1996 | | | 100 Barbirolli Square, Manchester, M2 3AB |