| READ, Benjamin Stevenson ACTIVE | Director | 10 Jun 2020 | | England | December 1974 | Daniel House, 31 Valepits Road, Garretts Green, Birmingham, B33 0TD, England |
| STRATMANN, Carsten Heinrich ACTIVE | Director | 22 Apr 2021 | | Germany | June 1976 | Daniel House, 31 Valepits Road, Garretts Green, Birmingham, B33 0TD, England |
| CIESIELSKA, Katarzyna Jolanta RESIGNED | Secretary | 07 Mar 2013 | 02 Jan 2014 | | | 100, Rue De Volmerange, Dudelange, Luxembourg |
| MORTIMER, Jonathan RESIGNED | Secretary | 15 Aug 2007 | 05 Mar 2013 | | | Harsco House, Regent Park 299 Kingston Road, Leatherhead, Surrey, KT22 7SG |
| AKHTAR, Andreas RESIGNED | Director | 28 Aug 2018 | 10 Jun 2020 | England | June 1974 | Regent Park, 299 Kingston Road, Leatherhead, Surrey, KT22 7SG, England |
| BARRETT, John William RESIGNED | Director | 15 Aug 2007 | 31 May 2010 | England | February 1947 | 6 Blythewood Close, Knowle, Solihull, West Midlands, B91 3HL |
| BILLINGSLEY, James Ray RESIGNED | Director | 01 Apr 2014 | 10 Aug 2018 | United States | July 1962 | Regent Park, 299 Kingston Road, Leatherhead, Surrey, KT22 7SG, England |
| 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 | 27 Mar 2008 | 31 Dec 2010 | England | October 1946 | Home Green Heath House Road, Worplesdon Hill, Woking, Surrey, GU22 0QU |
| CUBITT, Michael Harry RESIGNED | Director | 27 Mar 2008 | 31 Dec 2010 | United Kingdom | July 1948 | 22 Landen Grove, Wokingham, Berkshire, RG41 1LL |
| KIMMEL, Mark Edward RESIGNED | Director | 27 Mar 2008 | 02 Jan 2014 | Usa | March 1959 | Harsco House, Regent Park 299 Kingston Road, Leatherhead, Surrey, KT22 7SG |
| LECLERCQ, Herve Michal RESIGNED | Director | 02 Jan 2014 | 01 Apr 2014 | United Kingdom | June 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 |
| MACDONALD, Alexander James RESIGNED | Director | 02 Jan 2014 | 27 Jan 2016 | United Kingdom | December 1954 | Harsco House, Regent Park 299 Kingston Road, Leatherhead, Surrey, KT22 7SG |
| MACDONALD, Alexander James RESIGNED | Director | 10 Dec 2010 | 26 Nov 2013 | United Kingdom | December 1954 | Harsco House, Regent Park 299 Kingston Road, Leatherhead, Surrey, KT22 7SG |
| MCGALPINE, Christopher RESIGNED | Director | 02 Jan 2014 | 22 Apr 2021 | United Kingdom | May 1972 | 1st Floor, Russell House,, Regent Park, 297 Kingston Road, Leatherhead, Surrey, KT22 7LU, England |
| MCGALPINE, Christopher RESIGNED | Director | 15 Aug 2007 | 26 Nov 2013 | England | May 1962 | Harsco House, Regent Park 299 Kingston Road, 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 Road, Leatherhead, Surrey, KT22 7SG |
| SWEENEY, John Joseph RESIGNED | Director | 03 Oct 2011 | 02 Jan 2014 | Luxembourg | October 1952 | Harsco House, Regent Park 299 Kingston Road, Leatherhead, Surrey, KT22 7SG |
| WHISTLER, Christopher Claude Lashmer RESIGNED | Director | 15 Aug 2007 | 02 Jan 2014 | England | June 1958 | Harsco House, Regent Park 299 Kingston Road, Leatherhead, Surrey, KT22 7SG |