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Features & Benefits
High-resolution backdrop map data includes:

  • A comprehensive range of features such as Roads, railways, vegetation, boundaries, urban Extent, buildings. 
  • Rich topographic data content
  • Uncluttered and clean mapping 

As one of a range of backdrop base map services developed by Esri UK, OS MasterMap® BaseMap is derived from enhanced vector versions of OS OpenData products Strategi, VectorMap® District and VectorMap® Local.

From the Ordnance Survey Vector Map product range this large scale mapping dataset provides detailed mapping for all of Great Britain. One of the main characteristics of the dataset is representation of real world features (e.g. roads, railways, buildings, vegetation, boundaries and urban extents) as points, lines, polygons, and text.

Central Government, Defence, Education, Insurance, Local Government, Public Safety, Utilities, Private sector

Background mapping

Data Type
ArcGIS Online Tile Layer

Great Britain

Data Scale
1:75,000 and smaller scales- Strategi
1:50,000 - VectorMap District and Strategi
1:25,000 - VectorMap District
1:10,000 - VectorMap Local
1:5,000 - VectorMap Local
1:2,500 - VectorMap Local
1:1,250 - VectorMap Local
1:625 – VectorMap Local (Resampled)

Update Frequency

Coordinate Reference System
British National Grid (OSGB36)