Haltermann Carless www.haltermann-carless.com +44 (0)1372 360000 Grove House, Guildford Road, Leatherhead, Surrey, KT22 9DF, UK Haltermann Carless www.haltermann-carless.com +44 (0)1372 360000 Grove House, Guildford Road, Leatherhead, Surrey, KT22 9DF, UK The HCS Group is a leading international supplier of high-value hydrocarbon speciality solutions – a company formed from two of the oldest chemical producers in the world, Haltermann and Carless. Contact Us Facebook page Linked In Contact Us Facebook page Linked In Latest News