This report provides the results of a terrestrial invertebrate survey of the DHL-owned East Tilbury landfill site to inform Natural England’s proposal to enlarge the Mucking Flats and Marshes Site of Special Scientific Interest (SSSI), notified (in part) for its invertebrate interest. This survey compartment comprises a large unit of land and is located a short distance west of Coalhouse Fort. The survey targeted Species Assemblage Types (SATs) F111 ‘bare sand and chalk’ and F112 ‘ope...