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  1. Accessing OS APIs

OS Features API

PreviousTile requestNextOS Product Archive

Last updated 3 months ago

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Use OS Features API to filter Ordnance Survey data and receive exactly what you need, as and when you need it. Buildings, roads, rivers, hospitals, playing fields, greenspaces – there are many data layers available. There are lots of options for applying spatial filters (e.g. Intersects), attribute filters and even combinations. For example, you can select all buildings within a specified area of interest (a polygon feature).

Benefit from current, detailed and accurate data to help you generate new location-based insight. OS Features API contains OS MasterMap Topography Layer and much more, and can remove the need to download, store and manage large and complex datasets.

OS Features API gives you direct access to the detailed geometries and rich attribution of individual features. It is based on the OGC standard Web Feature Service () so is interoperable with lots of GIS software and web mapping libraries.

The OS MasterMap Water Network Layer product (also referred to as OS MasterMap Networks – Water Layer) will become End of Life on 31 March 2026. As of this date, access to the product will be removed from the OS Features API. Further information is available on the .

Detailed geospatial data

Provides online access to detailed OS MasterMap data, including buildings, roads and land.

Seamless Integration

Uses the Web Features Service (WFS) standard for interoperability with GIS applications.

Rich attribution information

Direct access to detailed attribution to inform decision making.

Advanced querying

Allows filtering for specific geographic features - spatially, by attribution or identifier.

On-demand access

Eliminates the need to download, store and maintain large datasets.

Up-to-date mapping

Ensures that users always have access to the most current mapping data.

Efficient data processing

Reduce workload by offering direct access to the required data.

Enhanced decision making

Provides detailed feature attribution for better and more informed analysis. .

  • Format: GeoJSON, XML

  • Data Source: see What data is available?for further information.

  • Coverage: Great Britain

  • OS Data Hub plan: OpenData Plan, Premium Plan, Public Sector Plan

Things to remember for OS Features API

You can:

  • Request specific feature types and their attributes using spatial or attribute queries.

  • Visualise and style Ordnance Survey data.

  • Interrogate highly detailed feature information, including OS MasterMap Topography Layer.

  • Create and apply your own styling preferences.

You can't:

  • Create a scalable map of Great Britain across zoom levels.

  • Request more than 100 features in a single transaction.

Update: 10 working days from each .

End of Life Product Notices page on the OS Download Products' Documentation site
product refresh date
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