| WARBURTON, Jennifer Ann ACTIVE | Secretary | 22 Feb 2017 | | | | Booths Park, Chelford Road, Knutsford, WA16 8QZ, England |
| WARBURTON, Jennifer Ann ACTIVE | Director | 26 Aug 2016 | | United Kingdom | March 1969 | Booths Park, Chelford Road, Knutsford, Cheshire, WA16 8QZ, England |
| AMEC NOMINEES LIMITED ACTIVE | Director | 26 Aug 2016 | | | | Booths Park, Chelford Road, Knutsford, WA16 8QZ, England |
| COUSINS, Andrew Johannes RESIGNED | Secretary | | 27 Jun 1997 | | | 24 Furrlong Avenue, Upper Tean, Stoke On Trent, Staffordshire, ST10 4JS |
| DAVIES, Michelle Karen RESIGNED | Secretary | 01 Apr 2009 | 29 Nov 2011 | | | Shinfield Park, Shinfield, Reading, Berkshire, RG2 9FW |
| DENLEY, Mark Hilton RESIGNED | Secretary | 01 Dec 2011 | 01 Mar 2015 | | | Shinfield Park, Shinfield, Reading, Berkshire, RG2 9FW |
| MORRELL, Helen RESIGNED | Secretary | 02 Mar 2015 | 22 Feb 2017 | | | Booths Park, Chelford Road, Knutsford, Cheshire, WA16 8QZ, England |
| RIMER, Geoffrey John RESIGNED | Secretary | 28 Jun 1997 | 05 Jul 2008 | | | West End, Church Street, Stokenchurch, Buckinghamshire, HP14 3UJ |
| BEAUMONT, Michael John RESIGNED | Director | 01 Apr 2009 | 31 Dec 2009 | United Kingdom | April 1949 | Shinfield Park, Shinfield, Reading, Berkshire, RG2 9FW |
| BEAUMONT, Michael John RESIGNED | Director | 06 Sep 1994 | 31 Dec 1997 | United Kingdom | April 1949 | Lingapund, 15 Telegraph Lane Four Marks, Alton, Hampshire, GU34 5AX |
| CHITTY, Colin Dale RESIGNED | Director | | 31 Mar 1992 | | January 1947 | 43 St Marys Road, Leatherhead, Surrey, KT22 8HB |
| COLLIS, Mark Russell RESIGNED | Director | 01 May 2013 | 26 Aug 2016 | United Kingdom | January 1972 | Booths Park, Chelford Road, Knutsford, Cheshire, WA16 8QZ, England |
| COUCH, William King RESIGNED | Director | | 27 Jun 1997 | | July 1935 | 4/900 Singleton Boulevard Suite 200, PO BOX 226237, Dallas, Texas 75222, FOREIGN, Usa |
| CULSHAW, Stephen Thomas RESIGNED | Director | 28 May 2010 | 31 Jul 2014 | United Kingdom | September 1960 | Shinfield Park, Shinfield, Reading, Berkshire, RG2 9FW |
| DUPAGNE, Laurent Jerome RESIGNED | Director | 01 Oct 2004 | 01 May 2013 | United Kingdom | October 1960 | Shinfield Park, Shinfield, Reading, Berkshire, RG2 9FW |
| EVANS, Timothy Martin RESIGNED | Director | | 01 Nov 1994 | United Kingdom | April 1935 | 8 Broadlands Close, Calcot Park, Reading, Berkshire, RG31 7RP |
| HOLT, Nicholas Christopher RESIGNED | Director | 19 Mar 1998 | 28 Apr 2006 | England | May 1951 | 1 Dynevor Road, Richmond Upon Thames, Surrey, TW10 6PF |
| KORNMEYER, Robin Allan RESIGNED | Director | | 31 Jan 2002 | | July 1948 | 4 Catawba Lane, Annandale, New Jersey, 08801, Usa |
| MAZZA, Thomas John RESIGNED | Director | 01 Feb 2002 | 31 Oct 2003 | | November 1953 | 1 Woodstock Lane, Annadale, New Jersey 08801, FOREIGN, United States Of America |
| RIMER, Geoffrey John RESIGNED | Director | 28 Jun 1997 | 05 Jul 2008 | | July 1943 | West End, Church Street, Stokenchurch, Buckinghamshire, HP14 3UJ |
| SHORTEN, Nicholas David RESIGNED | Director | 24 Feb 2015 | 26 Aug 2016 | England | January 1968 | Booths Park, Chelford Road, Knutsford, Cheshire, WA16 8QZ, England |
| SMITH, John Harding RESIGNED | Director | 18 Oct 1995 | 27 Jun 1997 | | January 1945 | St Tropez, East Street, Bodicote, Banbury, Oxfordshire, OX15 4EB |
| STAPLES, Trevor Bryan RESIGNED | Director | 24 Feb 2015 | 11 Apr 2016 | United Kingdom | March 1967 | Booths Park, Chelford Road, Knutsford, Cheshire, WA16 8QZ, England |
| WEINSTEIN, Steven Ira RESIGNED | Director | 28 Jun 1997 | 30 Oct 2004 | | February 1946 | 10 Spring Lake Drive, Far Hills, New Jersey 07931, FOREIGN, United States Of America |
| WHITE, George Stephen RESIGNED | Director | 28 Jun 1997 | 01 Sep 1999 | | January 1936 | 20 Blue Cliff Drive, Lebanon, New Jersey, 08833, Usa |