| SMITH, Graham Richard ACTIVE | Secretary | 15 Oct 2014 | | | | Office 3a Capital Tower, 91 Waterloo Road, London, SE1 8RT, England |
| BYRNE, Christopher ACTIVE | Director | 11 Nov 2025 | | England | October 1974 | Office 3a Capital Tower, 91 Waterloo Road, London, SE1 8RT, England |
| LIMA SOLLERO, Alberto ACTIVE | Director | 11 Nov 2025 | | England | September 1981 | Office 3a Capital Tower, 91 Waterloo Road, London, SE1 8RT, England |
| ROOSENSCHOON, Emile ACTIVE | Director | 01 Oct 2025 | | England | February 1984 | Office 3a Capital Tower, 91 Waterloo Road, London, SE1 8RT, England |
| SIDDIQI, Saad Naved ACTIVE | Director | 11 Nov 2025 | | England | September 1978 | Office 3a Capital Tower, 91 Waterloo Road, London, SE1 8RT, England |
| CIESIELSKA, Katarzyna Jolanta RESIGNED | Secretary | 07 Mar 2013 | 15 Oct 2014 | | | 100, Rue De Volmerange, Dudelange, Luxembourg |
| COPPOCK, Paul Croasdale RESIGNED | Secretary | 12 May 2000 | 22 Oct 2001 | | | 2203 West Coventry Lane, Enola, Pennsylvania 17025, Usa |
| MORTIMER, Jonathan RESIGNED | Secretary | 28 Mar 2003 | 05 Mar 2013 | | | Harsco House, Regent Park, 299 Kingston House Leatherhead, Surrey, KT22 7SG |
| PARR, Christopher Martin RESIGNED | Secretary | 22 Oct 2001 | 28 Mar 2003 | | | Treetops, Burney Road, Westhumble, Surrey, RH5 6AX |
| SWIFT INCORPORATIONS LIMITED RESIGNED | Nominee Secretary | 04 May 2000 | 12 May 2000 | | | 26, Church Street, London, NW8 8EP |
| BUTLER, Geoffrey Doy Hopson RESIGNED | Director | 19 Sep 2001 | 31 Dec 2010 | England | October 1946 | Home Green Heath House Road, Worplesdon Hill, Woking, Surrey, GU22 0QU |
| COOPER, Stephen Richard RESIGNED | Director | 10 Dec 2013 | 01 Oct 2025 | England | December 1966 | Office 3a Capital Tower, 91 Waterloo Road, London, SE1 8RT, England |
| CUBITT, Michael Harry RESIGNED | Director | 22 Oct 2001 | 31 Dec 2010 | United Kingdom | July 1948 | 22 Landen Grove, Wokingham, Berkshire, RG41 1LL |
| FAZZOLARI, Salvatore Domenico RESIGNED | Director | 12 May 2000 | 23 Feb 2012 | United States | August 1952 | 1827 Red Spruce Lane, Mechanicsburg, Pennsylvania 17050, United States |
| HATHAWAY, Derek Charles RESIGNED | Director | 12 May 2000 | 18 Dec 2007 | | May 1944 | 7 Northwatch Lane, Mechanicsburg, Pennsylvania, PA17055, Usa |
| HOAD, Martin Roger Gregory RESIGNED | Director | 10 Dec 2010 | 01 Nov 2011 | United Kingdom | November 1965 | Harsco House, Regent Park, 299 Kingston House Leatherhead, Surrey, KT22 7SG |
| JANSEN, Johannes Gregorius Alphons Marie RESIGNED | Director | 10 Dec 2010 | 10 Dec 2013 | Usa | March 1962 | Harsco House, Regent Park, 299 Kingston House Leatherhead, Surrey, KT22 7SG |
| KIMMEL, Mark Edward RESIGNED | Director | 16 Dec 2011 | 01 Oct 2012 | Usa | March 1959 | Harsco House, Regent Park, 299 Kingston House Leatherhead, Surrey, KT22 7SG |
| LECLERCQ, Herve Michal RESIGNED | Director | 03 Oct 2011 | 10 Dec 2013 | United Kingdom | June 1962 | Harsco House, Regent Park, 299 Kingston House Leatherhead, Surrey, KT22 7SG |
| MACDONALD, Alexander James RESIGNED | Director | 01 Nov 2011 | 10 Dec 2013 | United Kingdom | December 1954 | Harsco House, Regent Park, 299 Kingston House Leatherhead, Surrey, KT22 7SG |
| MALAMUD, Barry Evan RESIGNED | Director | 10 Dec 2013 | 20 Jul 2015 | United States | May 1967 | Harsco House, Regent Park, 299 Kingston House Leatherhead, Surrey, KT22 7SG |
| MULLEN, William Ian RESIGNED | Director | 20 Apr 2018 | 29 Apr 2020 | United Kingdom | January 1966 | Harsco House, Regent Park, 299 Kingston House Leatherhead, Surrey, KT22 7SG |
| O'KELLY, Paul Brian RESIGNED | Director | 10 Dec 2010 | 05 Dec 2011 | United Kingdom | December 1957 | Harsco House, Regent Park, 299 Kingston House Leatherhead, Surrey, KT22 7SG |
| REITEMEIER, Christophe Nicolas RESIGNED | Director | 31 Dec 2020 | 02 Dec 2025 | England | December 1965 | Office 3a Capital Tower, 91 Waterloo Road, London, SE1 8RT, England |
| STUBBS, Graham Martin RESIGNED | Director | 10 Dec 2013 | 30 Mar 2018 | United Kingdom | February 1954 | Harsco House, Regent Park, 299 Kingston House Leatherhead, Surrey, KT22 7SG |
| SWEENEY, John Joseph RESIGNED | Director | 20 Dec 2012 | 31 Mar 2022 | Luxembourg | October 1952 | Carlton House, Regent Park, 299 Kingston Road, Leatherhead, Surrey, KT22 7SG, England |
| TILMOUTH, Graeme Croft RESIGNED | Director | 03 Oct 2011 | 08 Feb 2013 | England | July 1957 | Harsco House, Regent Park, 299 Kingston House Leatherhead, Surrey, KT22 7SG |
| ZAMAN, Shaima RESIGNED | Director | 06 Apr 2022 | 11 Nov 2025 | England | December 1976 | Office 3a Capital Tower, 91 Waterloo Road, London, SE1 8RT, England |
| INSTANT COMPANIES LIMITED RESIGNED | Nominee Director | 04 May 2000 | 12 May 2000 | | | 1, Mitchell Lane, Bristol, Avon, BS1 6BU |