| IRWIN MITCHELL SECRETARIES LIMITED ACTIVE | Secretary | 30 Apr 2013 | | | | Riverside East, 2 Millsands, Sheffield, South Yorkshire, S3 8DT, United Kingdom |
| ARMOUR, Alan Weir, Dr ACTIVE | Director | 19 May 1997 | | United Kingdom | July 1948 | 56 Stubbs End Close, Amersham, Buckinghamshire, HP6 6EN |
| KENDRICK, Michael Jeffrey ACTIVE | Director | 04 Feb 2015 | | United States | March 1960 | 333, N Central Avenue, Phoenix, Arizona, 85004-2189, United States |
| FEENEY, Helen Gertrude Mccall RESIGNED | Secretary | | 31 Dec 1993 | | | 76 Mohawk Trail, Stamford, 6930 Connecticut, Usa |
| JONES, Gordon Richard RESIGNED | Secretary | | 24 Apr 1998 | | | 48 Chartfield Avenue, Putney, London, SW15 6HG |
| SANKEY-BARKER, Patric John Randle RESIGNED | Secretary | 24 Apr 1998 | 08 Jun 2006 | | | 23 Kidbrooke Grove, Blackheath, London, SE3 0LE |
| STAPLETON, John Nicholas RESIGNED | Secretary | 08 Jun 2006 | 30 Apr 2013 | | | The Corn Exchange, Baffins Lane, Chichester, West Sussex, PO19 1GE |
| CLARK, George William RESIGNED | Director | 01 Feb 1995 | 16 May 1997 | | May 1937 | Badgers Run Chapel Road, Beighton, Norwich, Norfolk, NR13 3LF |
| COOKE, Raymond Joseph RESIGNED | Director | | 31 Dec 1993 | | March 1936 | 27 Eleven Oclock Road, Weston, Connecticut 06883, Usa |
| DAINTY, Douglas Horbury RESIGNED | Director | | 01 Feb 1995 | | November 1931 | Old Forge Cottage, Hawstead Green, Bury St Edmunds, Suffolk |
| FEENEY, Helen Gertrude Mccall RESIGNED | Director | | 31 Dec 1993 | | October 1940 | 76 Mohawk Trail, Stamford, 6930 Connecticut, Usa |
| HOOSON, Marion Louise RESIGNED | Director | 20 Nov 2019 | 11 Jun 2026 | United Kingdom | August 1962 | Climax Molybdenum U.K. Limited, Needham Road, Stowmarket, Suffolk, IP14 2AE, United Kingdom |
| JONES, Gordon Richard RESIGNED | Director | | 24 Apr 1998 | | August 1931 | 48 Chartfield Avenue, Putney, London, SW15 6HG |
| KRAUSS, Philip David RESIGNED | Director | 13 Sep 1995 | 12 Oct 1995 | | May 1947 | 42 Chiltern Road, Bray, Maidenhead, Berkshire, SL6 1XA |
| OLIVER, Graham RESIGNED | Director | 13 Oct 1995 | 16 May 1997 | | September 1957 | 14 Orwell Road, Stowmarket, Suffolk, IP14 2DH |
| SANKEY-BARKER, Patric John Randle RESIGNED | Director | 24 Apr 1998 | 26 May 2006 | | December 1941 | 23 Kidbrooke Grove, Blackheath, London, SE3 0LE |
| SWEENEY, Anthony RESIGNED | Director | | 31 Dec 1993 | | December 1941 | 78 Noroton Avenue, Darien, Connecticut 06820, FOREIGN, Usa |
| THORNTON, David Hugh RESIGNED | Director | 18 Oct 2011 | 04 Feb 2015 | United States | August 1954 | 333, N Central Avenue, Phoenix, Arizona, 85004-2189, Usa |