Take your analysis to the next level
If you're developing geospatial data visualisations or dashboards, OS Maps API can help take your analysis to the next level.
Get started easily & for free
Simple to set up and access backdrop mapping, with resources from OS Data Hub, up to £1,000 free premium data usage per month and free development mode for testing.
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.
Easy to use
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.
How to get this product
How location data saves both time and money for the National Library of Scotland
The raster tile service included in the OS Maps API provides the most up-to-date map tiles.
Faster access to healthcare assets for NHS London Healthy Urban Development Unit
How location data helps the NHS London Healthy Urban Development Unit (NHS HUDU) make sure everyone has access to the healthcare they need.
NHS HUDU is using OS data including the OS Maps API to help produce detailed static mapping evidence to support health location planning, in conjunction with UPRN matching.
|What this product offers
WMTS and ZXY
Raster (256x256px @ 96dpi PNG tiles)
From National to building-level
OS MasterMap Topography Layer - six-weekly, 1: 25 000 Scale Colour Raster - quarterly, 1: 50 000 Scale Colour Raster - quarterly, OS Open Zoomstack - six-monthly, MiniScale - annually, 1: 250 000 Scale Colour Raster - annually
British National Grid (EPSG: 27700) and Web Mercator (EPSG: 3857)
Access via the OS Data Hub