| SMITH, Graham Richard ACTIVE | Secretary | 19 Mar 2015 | | | | 1020, Eskdale Road, Winnersh, Wokingham, RG41 5TS |
| COOPER, Stephen Richard ACTIVE | Director | 25 Apr 2014 | | England | December 1966 | 1020, Eskdale Road, Winnersh, Wokingham, RG41 5TS |
| WHISTLER, Christopher Claude Lashmer ACTIVE | Director | 16 Jun 2014 | | England | June 1958 | 1020, Eskdale Road, Winnersh, Wokingham, RG41 5TS |
| FORSYTHE, Andrew RESIGNED | Secretary | 06 Jun 2001 | 01 Aug 2001 | | | Pine Lodge, 2b Coral Close, Burbage Hinckley, Leicestershire, LE10 2HB |
| GOULDING, Graham Thomas RESIGNED | Secretary | 01 Aug 2001 | 25 Apr 2003 | | | 126 Auckland Road, London, SE19 2RP |
| MACDONALD, Janet Ann RESIGNED | Secretary | 04 Jun 2003 | 19 Mar 2015 | | | Harsco House Regent Park, 299 Kingston Road, Leatherhead, Surrey, KT22 7SG |
| CHETTLEBURGHS SECRETARIAL LTD RESIGNED | Nominee Secretary | 04 May 2001 | 06 Jun 2001 | | | Temple House, 20 Holywell Row, London, EC2A 4XH |
| BURNS, Roderick RESIGNED | Director | 10 Dec 2010 | 03 Oct 2011 | England | December 1966 | Harsco House Regent Park, 299 Kingston Road, Leatherhead, Surrey, KT22 7SG |
| HOAD, Martin Roger Gregory RESIGNED | Director | 10 Dec 2010 | 01 Nov 2011 | United Kingdom | November 1965 | Harsco House Regent Park, 299 Kingston Road, Leatherhead, Surrey, KT22 7SG |
| KIMMEL, Mark Edward RESIGNED | Director | 01 Nov 2011 | 01 Oct 2012 | Usa | March 1959 | Harsco House Regent Park, 299 Kingston Road, Leatherhead, Surrey, KT22 7SG |
| LECLERCQ, Herve Michal RESIGNED | Director | 03 Oct 2011 | 16 Dec 2013 | United Kingdom | June 1962 | Harsco House Regent Park, 299 Kingston Road, Leatherhead, Surrey, KT22 7SG |
| MACDONALD, Alexander James RESIGNED | Director | 06 Jun 2001 | 26 Nov 2013 | United Kingdom | December 1954 | Harsco House Regent Park, 299 Kingston Road, Leatherhead, Surrey, KT22 7SG |
| REID, Robert Andrew Wilson RESIGNED | Director | 06 Jun 2001 | 10 May 2005 | | April 1945 | Dunmore, Gryffe Road, Kilmacolm, Inverclyde, PA13 4BA |
| SHINE, Stephen Frank RESIGNED | Director | 10 May 2005 | 31 Dec 2006 | England | March 1957 | Lethread, Cherkley Hill, Leatherhead, Surrey, KT22 8LA |
| SWEENEY, John Joseph RESIGNED | Director | 10 Dec 2010 | 01 Jul 2014 | Luxembourg | October 1952 | Harsco House Regent Park, 299 Kingston Road, Leatherhead, Surrey, KT22 7SG |
| TILMOUTH, Graeme Croft RESIGNED | Director | 03 Oct 2011 | 08 Feb 2013 | England | July 1957 | Harsco House Regent Park, 299 Kingston Road, Leatherhead, Surrey, KT22 7SG |
| CHETTLEBURGH'S LIMITED RESIGNED | Nominee Director | 04 May 2001 | 06 Jun 2001 | | | Temple House, 20 Holywell Row, London, EC2A 4JB |