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Introduction to OS MasterMap 
           

OS MasterMap is...

...Ordnance Survey's revolutionary new large-scale product and online service, providing polygon data and a unique reference (TOID) for every feature on the British landscape. Features have been enhanced and allocated to layers and themes, and map tiles have been removed to generate a seamless map for the whole of Great Britain.

  • A new referencing framework developed by Ordnance Survey to deliver data most efficiently in a consistent, flexible and interchangeable format to meet 21st century needs.
  • The definitive digital map database of Great Britain.
  • A new standard in intelligent map data.
  • A more accessible, superior service.

OS MasterMap provides...

  • A seamless database reflecting the real world, with polygons representing man-made and natural features.
  • Unique identifiers (TOIDs): a unique code for each feature enabling easier data analysis and data sharing.
  • Improved attribution, for more versatile classification of features, more intelligent data and better analysis.
  • An online selection, quotation and delivery service to supply your data faster and more efficiently.
  • Greater opportunities for our Licensed Partners.