OS MasterMap® is Ordnance Survey's most comprehensive product, containing a suite of different layers, each of which provides a different aspect of valuable mapping data for use in a Geographic Information system (GIS).
- Large scale - local
- Height and imagery
- Detailed Networks
- Address and location
It is a continually updated database, containing 450 million geographic features found in the real world, from individual addresses to roads and buildings. Every feature has a unique common reference (a TOID) which enables the layers to be used together, including a layer of your own information.
OS MasterMap layers currently include:
- Topography Layer
- Integrated Transport Network™ (ITN) Layer
- Imagery Layer
- Networks - Water Layer (alpha release)
- Sites Layer
The sections below explain each of the OS MasterMap layers and how they can help your organisation to visualise data and solve geographic and location based problems.
If you need further information on OS MasterMap, please also visit our OS MasterMap support page.