Maps and map data of Great Britain. Maps can be generated online or downloaded to use with appropriate application software such as GIS or CAD. Provides access to Geology Digimap, Historic Digimap and current Ordnance Survey maps of any location in Great Britain at a series of predefined scales. The "Marine" files are not available. *Please note*: you need to register with Edina to use this site in the first instance. This process takes up to two working days.