| 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 |
| WILLARD, Peter Edward RESIGNED | Secretary | | 08 Apr 1994 | | | 240 Old Lodge Lane, Purley, Surrey, CR8 4AP |
| MOWLEM SECRETARIAT LIMITED RESIGNED | Secretary | 08 Apr 1994 | 01 Nov 1997 | | | White Lion Court, Swan Street, Isleworth, Middlesex, TW7 6RN |
| BARRETT, John William RESIGNED | Director | 31 Aug 1994 | 01 Nov 1997 | England | February 1947 | 6 Blythewood Close, Knowle, Solihull, West Midlands, B91 3HL |
| BAYLES, Geoffrey Francis RESIGNED | Director | | 02 Apr 1993 | United Kingdom | January 1939 | Valley House, 6 Boyce Farm Road, Thames Ditton, Surrey, KT7 0TS |
| BRIDGMAN, Robert Edward RESIGNED | Director | | 28 May 1991 | | March 1938 | 16 Woodcote House Court, Woodcote Green Road, Woodcote, Surrey, KT18 7BG |
| 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 |
| CASTELLANI, Paul RESIGNED | Director | | 02 Jul 1991 | | June 1948 | 58 Station Road, Aldershot, Hampshire, GU11 1BG |
| 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 |
| JONES, Stephen Charles RESIGNED | Director | 02 Jul 1991 | 01 Nov 1997 | | December 1943 | Rydal Pickmere Lane, Over Tabley, Knutsford, Cheshire, WA16 0HS |
| 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 |
| PARKER, Barrie RESIGNED | Director | | 02 Jul 1991 | England | August 1939 | Shelley House 2 Station Road, Fiskerton, Nottinghamshire, NG25 0UG |
| PURKIS, William Richard RESIGNED | Director | 02 Jul 1991 | 30 Apr 1993 | | March 1945 | Kemps House, Balldock Road, Wadhurst, East Sussex, TN5 6HT |
| 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 |
| SLAUGHTER, Ian Richard Holder RESIGNED | Director | | 02 Nov 1991 | | March 1954 | 34 Morley Road, Twickenham, Middlesex, TW1 2HF |
| WEBB, David Dellmont RESIGNED | Director | | 02 Jul 1991 | | January 1949 | 13 Cliff Park, Cults, Aberdeen, Aberdeenshire, AB1 9JT |
| WEIR, Douglas Sidney RESIGNED | Director | 02 Jul 1991 | 19 Aug 1994 | | April 1955 | 9 Well Lane, Horsell, Woking, Surrey, GU21 4PL |
| WIGG, Christopher Graham RESIGNED | Director | | 31 Aug 1994 | | March 1951 | 169 Worple Road, London, SW20 8RQ |
| WILLARD, Peter Edward RESIGNED | Director | | 01 Nov 1997 | | July 1957 | 240 Old Lodge Lane, Purley, Surrey, CR8 4AP |
| 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 | 31 Aug 1994 | 01 Nov 1997 | | | White Lion Court, Swan Street, Isleworth, Middlesex, TW7 6RN |
| MOWLEM SECRETARIAT LIMITED RESIGNED | Director | 31 Aug 1994 | 01 Nov 1997 | | | White Lion Court, Swan Street, Isleworth, Middlesex, TW7 6RN |