Data related to contaminated land projects completed under commercial contract for local authorities (ConSEPT). The data held and used in the project included published BGS data (borehole, BGS Geology 50k and 10k, water well information), as well as third party data held on behalf of local authorities (including current and historical land use polygons and landfill sites) for the purposes of building the ConSEPT GIS. Consequently some data and the projects are strictly commercial in confidence and should not be shared.