The BGS Estimated Ambient Background Soil Chemistry Scotland digital soil chemistry data indicates the estimated geometric mean topsoil concentrations (mg kg-1) of Arsenic (As), Cadmium (Cd), Chromium (Cr), Nickel (Ni) and Lead (Pb). The soil chemistry data is based on GBASE (Geochemical Baseline Survey of the Environment) stream sediment data converted to top soil equivalent potentially harmful element(PHE) concentrations. This dataset covers Scotland but data is available for the whole of Great Britain, with the exception of the London area where an inadequate number of geochemical samples are available at the moment.