| WHISTLER, Christopher Claude Lashmer ACTIVE | Secretary | 04 Jun 2003 | | | | No 1, Dorset Street, Southampton, Hampshire, SO15 2DP |
| COOPER, Stephen Richard ACTIVE | Director | 30 Apr 2014 | | England | December 1966 | No 1, Dorset Street, Southampton, Hampshire, SO15 2DP |
| WHISTLER, Christopher Claude Lashmer ACTIVE | Director | 10 Dec 2010 | | England | June 1958 | No 1, Dorset Street, Southampton, Hampshire, SO15 2DP |
| APPLEFORD, Heather Ann RESIGNED | Secretary | 01 Oct 1992 | 07 Jun 1998 | | | 20 Spoon Way, Stannington, Sheffield, South Yorkshire, S6 6EZ |
| GOULDING, Graham Thomas RESIGNED | Secretary | 07 Jun 1998 | 25 Apr 2003 | | | 126 Auckland Road, London, SE19 2RP |
| WOOLASS, Stanley David RESIGNED | Secretary | | 30 Sep 1992 | | | 17 Ribblesdale Drive, Ridgeway, Sheffield, South Yorkshire, S12 3XB |
| APPLEFORD, Heather Ann RESIGNED | Director | 22 Jan 1995 | 07 Jun 1998 | | November 1961 | 20 Spoon Way, Stannington, Sheffield, South Yorkshire, S6 6EZ |
| BROWN, David George RESIGNED | Director | | 05 Jun 1995 | | August 1953 | 61 Andrew Road, Valentine, Newcastle 2280, Nsw, Australia |
| BUTLER, Geoffrey Doy Hopson RESIGNED | Director | 07 Jun 1998 | 31 Dec 2010 | England | October 1946 | Home Green Heath House Road, Worplesdon Hill, Woking, Surrey, GU22 0QU |
| CRAVEN, John Lawrence RESIGNED | Director | | 30 Apr 1999 | | November 1946 | 46 Woodhead Road, Glossop, Derbyshire, SK13 9RH |
| 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 | | 07 Jun 1998 | England | November 1946 | Hazeley House, High Street Chieveley, Newbury, Berkshire, RG20 8UX |
| 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 |
| MILLER, Robert Thomas RESIGNED | Director | | 01 May 1995 | | February 1949 | 9 Larch Square, Auckley, Doncaster, South Yorkshire, DN9 3LL |
| NAVARRA, Stephane RESIGNED | Director | 10 Dec 2010 | 30 Sep 2011 | France | August 1966 | Harsco House, Regent Park, 299 Kingston Road Leatherhead, Surrey, KT22 7SG |
| OAKES, Paul Harry RESIGNED | Director | 03 Oct 2011 | 12 Jun 2014 | United Kingdom | November 1957 | Harsco House, Regent Park, 299 Kingston Road Leatherhead, Surrey, KT22 7SG |
| STUBBS, Graham Martin RESIGNED | Director | 10 Dec 2010 | 12 Jun 2014 | United Kingdom | February 1954 | Harsco House, Regent Park, 299 Kingston Road Leatherhead, Surrey, KT22 7SG |
| WOODWORTH, Ronald Leslie RESIGNED | Director | 28 Jul 1992 | 31 May 1993 | England | September 1941 | 3c Hallgarth, Newby Wiske, Northallerton, North Yorkshire, DL7 9JL |