This Web service provides layers containing offshore digital mapping datasets compiled by the British Geological Survey which have coverage across the UK Continental Shelf (UKCS), mostly at scales smaller than 1:250 000. It provides view and download services for the following datasets: - BGS Offshore Bedrock 250k - BGS Seabed Sediments 250k (including the Marine Hard Substrate Dataset) - BGS Offshore Quaternary 250k - 1:1 000 000 scale geological factor map: bedrock summary lithology - 1:1 000 000 scale geological factor map: Quaternary deposit summary lithology - 1:1 000 000 scale geological factor map: Quaternary deposit thickness - BGS Predictive Seabed Sediments (UK) For more information, contact BGS Marine Enquiries (offshoredata@bgs.ac.uk).