OS Maps API

  • Contextual or derived mapping

Accurate, up-to-date maps that offer the most convenient way to add detailed OS data to your application. Benefit from unrivalled levels of detail in your GIS, web or mobile app. OS Maps API contains OS MasterMap Topography Layer, 1:25 000 Scale Colour Raster and more data layers.

This product is updated every six weeks (largest scales)

Free to use for everyone
Data access
  • API
Data structure
  • Raster
Coverage
Great Britain
Scale/resolution
National scale to building scale (1:5,000,000 to 1:1250)
Format
  • WMTS and ZXY​
OS Data Hub plan
  • OS OpenData Plan (FREE)
  • Premium Plan
  • Public Sector Plan

What OS Maps API provides you with

Up-to-date detailed mapping

No need to update or download the latest version - OS Maps API always provides the most up-to-date mapping in unrivalled detail, including OS MasterMap Topography Layer.

Beautiful cartography and styles

Choose from four beautifully styled map suites to fit your needs, from our iconic Leisure Maps to a more subtle Light style mapping.

Suitable for most geospatial software

OS Maps API is interoperable with most geospatial software; you can access the maps via OGC standard Web Map Tile Service (WMTS) or RESTful ZXY.

Use with GIS software and web mapping libraries

You can use OS Maps API with web mapping libraries like Mapbox GL JS, Leaflet, OpenLayers and ArcGIS API for JavaScript.

Additional information

Available styles

OS Maps API has four map style options; Leisure, Road, Outdoor and Light.

Available projections

OS Maps API has two projection options; British National Grid (EPSG: 27700) and Web Mercator (EPSG: 3857).

Accurate, up-to-date maps that offer the most convenient way to add detailed OS data to your application. Benefit from unrivalled levels of detail in your GIS, web or mobile app. OS Maps API contains OS MasterMap Topography Layer, 1:25 000 Scale Colour Raster and more data layers.

This product is updated every six weeks (largest scales)

Free to use for everyone
Data access
  • API
Data structure
  • Raster
Coverage
Great Britain
Scale/resolution
National scale to building scale (1:5,000,000 to 1:1250)
Format
  • WMTS and ZXY​
OS Data Hub plan
  • OS OpenData Plan (FREE)
  • Premium Plan
  • Public Sector Plan