| WHISTLER, Christopher Claude Lashmer ACTIVE | Secretary | 04 Jun 2003 | | | | 1020, Eskdale Road, Winnersh, Wokingham, Berkshire, RG41 5TS |
| COOPER, Stephen Richard ACTIVE | Director | 12 Jun 2014 | | England | December 1966 | 1020, Eskdale Road, Winnersh, Wokingham, Berkshire, RG41 5TS |
| WHISTLER, Christopher Claude Lashmer ACTIVE | Director | 04 Jun 2003 | | England | June 1958 | 1020, Eskdale Road, Winnersh, Wokingham, Berkshire, RG41 5TS |
| BULLOCK, Patricia Mary RESIGNED | Secretary | 12 Nov 1997 | 07 Jun 1998 | | | Bowden Ash Upper Bowden, Pangbourne, Reading, Berkshire, RG8 8PU |
| GOULDING, Graham Thomas RESIGNED | Secretary | 07 Jun 1998 | 25 Apr 2003 | | | 126 Auckland Road, London, SE19 2RP |
| SWAYNE, Anthony William John RESIGNED | Secretary | | 12 Nov 1997 | | | The Old Vicarage, East Meon, Petersfield, Hampshire, GU32 1PG |
| BOUGHTON, Roger Francis RESIGNED | Director | | 20 Jan 1997 | | January 1946 | South House, Broomfield Farm, Appleton, Cheshire, WA4 3AQ |
| CUBITT, Michael Harry RESIGNED | Director | 07 Jun 1998 | 31 Dec 2010 | United Kingdom | July 1948 | 22 Landen Grove, Wokingham, Berkshire, RG41 1LL |
| FEAVIOUR, Roger St Denis RESIGNED | Director | 18 Feb 1993 | 07 Jun 1998 | England | November 1946 | Hazeley House, High Street Chieveley, Newbury, Berkshire, RG20 8UX |
| GOULDING, Graham Thomas RESIGNED | Director | 07 Jun 1998 | 25 Apr 2003 | England | June 1949 | 126 Auckland Road, London, SE19 2RP |
| 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 |
| JANSEN, Johannes Gregorius Alphons Marie RESIGNED | Director | 10 Dec 2010 | 16 Dec 2013 | Usa | March 1962 | 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 |
| OAKES, Paul Harry RESIGNED | Director | 03 Oct 2011 | 21 Jul 2014 | United Kingdom | November 1957 | Harsco House, Regent Park, 299 Kingston Road Leatherhead, Surrey, KT22 7SG |
| PREST, Richard Jullion RESIGNED | Director | | 18 Feb 1993 | | May 1946 | Gardens House, Thoresby Park, Newark, Nottinghamshire, NG22 9EH |
| STUBBS, Graham Martin RESIGNED | Director | 03 Oct 2011 | 21 Jul 2014 | United Kingdom | February 1954 | Harsco House, Regent Park, 299 Kingston Road Leatherhead, Surrey, KT22 7SG |
| SWAYNE, Anthony William John RESIGNED | Director | 18 Feb 1993 | 07 Jun 1998 | United Kingdom | September 1948 | The Old Vicarage, East Meon, Petersfield, Hampshire, GU32 1PG |