| MACDONALD, Janet Ann ACTIVE | Secretary | 04 Jun 2003 | | | | Harsco House Regent Park, 299 Kingston Road, Leatherhead, Surrey, KT22 7SG |
| MACDONALD, Alexander James ACTIVE | Director | 10 Dec 2010 | | United Kingdom | December 1954 | Harsco House Regent Park, 299 Kingston Road, Leatherhead, Surrey, KT22 7SG |
| SWEENEY, John Joseph ACTIVE | Director | 03 Oct 2011 | | Luxembourg | October 1952 | Harsco House Regent Park, 299 Kingston Road, Leatherhead, Surrey, KT22 7SG |
| WHISTLER, Christopher Claude Lashmer ACTIVE | Director | 18 Sep 2000 | | England | June 1958 | Harsco House Regent Park, 299 Kingston Road, Leatherhead, Surrey, KT22 7SG |
| FORSYTHE, Andrew RESIGNED | Secretary | 20 Apr 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 |
| RICHARDSON, Elaine RESIGNED | Secretary | 30 Sep 2000 | 20 Apr 2001 | | | The Willows Willowside, London Colney, St Albans, Hertfordshire, AL2 1DP |
| SCULL, Andrew James RESIGNED | Secretary | 01 Nov 1997 | 30 Sep 2000 | | | 2 The Granary Brickwall Farm, Kiln Lane Clophill, Bedford, Bedfordshire, MK45 4DA |
| SMITH, Alwyn Campbell RESIGNED | Secretary | | 27 Oct 1993 | | | 4 Beaulieu Close, Cambridge Park, Twickenham, Middlesex, TW1 2JR |
| MOWLEM SECRETARIAT LIMITED RESIGNED | Secretary | 27 Oct 1993 | 01 Nov 1997 | | | White Lion Court, Swan Street, Isleworth, Middlesex, TW7 6RN |
| BURNS, Roderick RESIGNED | Director | 10 Dec 2010 | 03 Oct 2011 | England | December 1966 | Harsco House Regent Park, 299 Kingston Road, Leatherhead, Surrey, KT22 7SG |
| BUTLER, Geoffrey Doy Hopson RESIGNED | Director | 30 Sep 2000 | 31 Dec 2010 | England | October 1946 | Home Green Heath House Road, Worplesdon Hill, Woking, Surrey, GU22 0QU |
| 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 |
| MCCANN, Edward Bryan RESIGNED | Director | | 07 Aug 1992 | | September 1944 | Cherry Trees, Uplands, Ashtead, Surrey, KT21 2TN |
| NAPIER, Graham Charles RESIGNED | Director | | 31 Aug 1993 | | May 1933 | The Brambles, 273 Hayes Lane, Kenley, Surrey, CR8 5EJ |
| O'KELLY, Paul Brian RESIGNED | Director | 10 Dec 2010 | 05 Dec 2011 | United Kingdom | December 1957 | Harsco House Regent Park, 299 Kingston Road, Leatherhead, Surrey, KT22 7SG |
| SCULL, Andrew James RESIGNED | Director | 01 Nov 1997 | 30 Sep 2000 | | April 1956 | 2 The Granary Brickwall Farm, Kiln Lane Clophill, Bedford, Bedfordshire, MK45 4DA |
| WEBB, David Dellmont RESIGNED | Director | 07 Aug 1992 | 05 Oct 1995 | | January 1949 | 1 The Stables, Langton Long, Blandford, Dorset, DT11 9HR |
| YAPP, Stephen RESIGNED | Director | 01 Nov 1997 | 30 Sep 2000 | England | May 1957 | 4 The Tovells, Off School Lane Ufford, Woodbridge, Suffolk, IP13 6HF |
| MOWLEM MANAGEMENT LIMITED RESIGNED | Director | 05 Oct 1995 | 01 Nov 1997 | | | White Lion Court, Swan Street, Isleworth, Middlesex, TW7 6RN |
| MOWLEM SECRETARIAT LIMITED RESIGNED | Director | 27 Oct 1993 | 01 Nov 1997 | | | White Lion Court, Swan Street, Isleworth, Middlesex, TW7 6RN |