OS MasterMap

OS MasterMap is the definitive source of highly-detailed geographic data of Great Britain. We offer it in layers – topographic, imagery, networks – so you can buy just what you need.

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OS MasterMap Water Network Layer

This is the only detailed, heighted water network of Great Britain showing the flow and precise course of rivers, streams, lakes and canals. It supports flood risk management and is ideal for data sharing.

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OS MasterMap Imagery Layer

When you need the visual feel for a location, the aerial photography of OS MasterMap Imagery Layer gives you the real-world view.

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OS MasterMap Highways Network

OS MasterMap Highways Network provides all the highways data you need, in one place. It’s a new, common and authoritative view of the whole road network in Great Britain, ideal for routing and public sector data-sharing.

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OS MasterMap Integrated Transport Network Layer

The most current and complete network view of Great Britain's roads available today – all 550,000kms of it – OS MasterMap® Integrated Transport Network™ Layer underpins key routing applications.

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OS MasterMap Topography Layer

OS MasterMap Topography Layer is the most detailed and accurate view of Great Britain's landscape – from roads to fields, to buildings and trees, fences, paths and more.