OS Mastermap data is created from a continually updated database giving you the most detailed, current and comprehensive mapping available. OS MasterMap contains 450 million geographic features found in the real world, from individual addresses to roads and buildings. You can select the exact area required so you only pay for the data you will use, choose the best file format for your requirements DXF, DWG, TIFF, PDF. OS Vector Map Local Export Ideal mapping for a clear overview of larger parcels of land, our largest scale data available with contours. Established in 1900, John E Wright & Co is now one of the leading large format print suppliers in the UK. The company has invested millions in state-of-the-art digital imaging and finishing equipment to produce the very highest quality print at competitive prices. Source.