| BARLOW, Amanda Louise ACTIVE | Director | 27 Sep 2023 | | England | August 1973 | 1, Orchard Place, Nottingham Business Park, Nottingham, Nottinghamshire, NG8 6PX, United Kingdom |
| LECOQUE, Jay Charles ACTIVE | Director | 12 May 2017 | | United States | November 1962 | 1 Orchard Place, Nottingham Business Park, Nottingham, NG8 6PX |
| ASTLE, Michael John RESIGNED | Secretary | 12 May 2017 | 05 Oct 2017 | | | 1 Orchard Place, Nottingham Business Park, Nottingham, NG8 6PX |
| BOOTH, Francis David RESIGNED | Secretary | 08 Aug 1995 | 30 Apr 1997 | | | Lower Church Farmhouse, Speldhurst Hill, Speldhurst, Kent, TN3 0NJ |
| CLINCH, Ronsy Freda RESIGNED | Secretary | 05 May 1995 | 08 Aug 1995 | | | 30 First Street, Langton Green, Kent, TN3 0EU |
| CLINCH, Ronsy Freda RESIGNED | Secretary | 05 May 1995 | 08 Aug 1995 | | | 30 First Street, Langton Green, Tunbridge Wells, Kent, TN3 0EU |
| OSBORN, Iain Charles RESIGNED | Secretary | 01 Aug 2003 | 31 Aug 2005 | | | 139 Davies Road, West Bridgford, Nottingham, Nottinghamshire, NG2 5HZ |
| WILLAN, Nigel Gordon RESIGNED | Secretary | 30 Apr 1997 | 31 Jul 2003 | | | Lyndhurst Barden Road, Speldhurst, Tunbridge Wells, Kent, TN3 0QD |
| HALLMARK SECRETARIES LIMITED RESIGNED | Nominee Secretary | 05 May 1995 | 05 May 1995 | | | 120 East Road, London, N1 6AA |
| MEDICAL SOLUTIONS (NOTTINGHAM) LIMITED RESIGNED | Secretary | 12 Jul 2007 | 19 Feb 2009 | | | 1 Orchard Place, Nottingham Business Park, Nottingham, Notts, NG8 6PX |
| PATHLORE LTD RESIGNED | Secretary | 28 Oct 2005 | 12 Jul 2007 | | | 1 Orchard Place, Nottingham Business Park, Nottingham, NG8 6PX |
SOURCE BIOSCIENCE UK LIMITED RESIGNEDRegistration number 4078501 | Secretary | 19 Feb 2009 | 12 May 2017 | | | 1, Orchard Place Nottingham Business Park, Nottingham, NG8 6PX, United Kingdom |
| ADAMS, Rodney Harry, Dr RESIGNED | Director | 04 May 2000 | 21 Jan 2003 | England | December 1944 | Oak House, The Green, Old Scriven, Knaresborough, HG5 9EA |
| ASH, Nicholas Watson, Dr RESIGNED | Director | 18 Oct 2011 | 12 May 2017 | England | July 1969 | 1, Orchard Place, Nottingham Business Park, Nottingham, NG8 6PX, United Kingdom |
| BOOTH, Francis David RESIGNED | Director | 08 Aug 1995 | 30 Apr 1997 | | November 1953 | Lower Church Farmhouse, Speldhurst Hill, Speldhurst, Kent, TN3 0NJ |
| CATER, Eric John RESIGNED | Director | 29 Sep 1999 | 04 May 2000 | United Kingdom | May 1940 | Five Oaks Common Lane, The Ridge Little Baddow, Chelmsford, Essex, CM3 4RY |
| CHISHOLM, Iain Macdonald RESIGNED | Director | 12 May 2017 | 02 Jan 2018 | England | March 1950 | 1 Orchard Place, Nottingham Business Park, Nottingham, NG8 6PX |
| CLINCH, Noah, Dr RESIGNED | Director | 05 May 1995 | 14 Feb 2007 | | April 1941 | 30 Wilkie Way, Salt Spring Island, British Columbia, V8K 2T8, Canada |
| CLINCH, Ronsy Freda RESIGNED | Director | 05 May 1995 | 29 Sep 1999 | | November 1940 | 30 First Street, Langton Green, Tunbridge Wells, Kent, TN3 0EU |
| DUFF, Gordon, Professor RESIGNED | Director | 21 Mar 2000 | 26 Jun 2001 | | December 1947 | 18 Ashgate Road, Sheffield, South Yorkshire, S10 3BZ |
| FARRER BROWN, Geoffrey, Dr RESIGNED | Director | 30 Nov 1999 | 11 Oct 2001 | England | May 1934 | Radnage Bottom Farm, Radnage Lane, Radnage, Buckinghamshire, HP14 4DX |
| GREEN, Charles Alexander RESIGNED | Director | 26 May 1999 | 24 Jan 2001 | | May 1953 | Home Farm, Gautby, Market Rasen, Lincolnshire, LN8 5JP |
| KIRKHAM, David Michael RESIGNED | Director | 15 Jun 2021 | 26 Sep 2022 | England | February 1967 | 1 Orchard Place, Nottingham Business Park, Nottingham, NG8 6PX |
| LONGSTAFFE, Andrew David RESIGNED | Director | 04 May 2000 | 19 Jan 2005 | England | March 1959 | 320 Drub Lane, Gomersal, Bradford, West Yorkshie, BD19 4BX |
| MACINTYRE, Iain, Professor RESIGNED | Director | 08 Aug 1995 | 26 Jun 2001 | | August 1924 | Great Broadhurst Farm, Broad Oak, Heathfield, East Sussex, TN21 8UX |
| NOLAN, Trevor Frank RESIGNED | Director | 09 Jan 2018 | 28 Feb 2020 | United Kingdom | April 1973 | 1 Orchard Place, Nottingham Business Park, Nottingham, NG8 6PX |
| RATCLIFFE, Anthony James RESIGNED | Director | 26 Sep 2022 | 27 Sep 2023 | England | March 1964 | 1, Orchard Place, Nottingham Business Park, Nottingham, Nottinghamshire, NG8 6PX, United Kingdom |
| TWOSE, Trevor Martin, Doctor RESIGNED | Director | 24 Jan 2001 | 08 Feb 2002 | | December 1946 | Belchers Cottage, Fyfield Wick, Abingdon, Oxfordshire, OX13 5NB |
| WHEATCROFT, Russell Steven RESIGNED | Director | 12 May 2017 | 15 Jun 2021 | England | February 1971 | 1 Orchard Place, Nottingham Business Park, Nottingham, NG8 6PX |
| HALLMARK REGISTRARS LIMITED RESIGNED | Nominee Director | 05 May 1995 | 05 May 1995 | | | 120 East Road, London, N1 6AA |
| MEDICAL SOLUTIONS (DIRECTORS) LIMITED RESIGNED | Director | 11 Oct 2006 | 05 Nov 2009 | | | 1 Orchard Place, Nottingham Business Park, Nottingham, NG8 6PX |
| SOURCE BIOSCIENCE (DIRECTORS) LIMITED RESIGNED Registration number 5963375 | Director | 05 Nov 2009 | 12 May 2017 | | | 1, Orchard Place, Nottingham Business Park, Nottingham, NG8 6PX |