OS Maps API

OS Maps API serves pre-rendered raster tiles and is available in two projections; British National Grid for GB data and Web Mercator which is a global coordinate system. You can request the maps using the Open Geospatial Consortium Web Map Tile Service (WMTS) standard or RESTful ZXY. WMTS is supported by most GIS software and ZXY is efficient for web mapping.

This product is updated 15 working days from each product refresh date

View documentation
Data access
  • API
Data structure
  • Raster
Scale/resolution
National scale to building scale (1:5 000 000 to 1:1 250)
Format
  • Raster Tiles
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; Leisure, Road, Outdoor and Light, 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.

Use cases

  • Use in public-facing platforms to visualise local services, planning zones, or leisure routes.
  • Overlay datasets like planning applications or environmental zones on top of OS MasterMap geometries.

OS Maps API serves pre-rendered raster tiles and is available in two projections; British National Grid for GB data and Web Mercator which is a global coordinate system. You can request the maps using the Open Geospatial Consortium Web Map Tile Service (WMTS) standard or RESTful ZXY. WMTS is supported by most GIS software and ZXY is efficient for web mapping.

This product is updated 15 working days from each product refresh date

View documentation
Data access
  • API
Data structure
  • Raster
Scale/resolution
National scale to building scale (1:5 000 000 to 1:1 250)
Format
  • Raster Tiles
OS Data Hub plan
  • OS OpenData Plan (FREE)
  • Premium Plan
  • Public Sector Plan