Welcome to OS Docs!

Welcome to documentation for OS data products and services!

This is a place where you can find all the necessary documentation to easily get started using Ordnance Survey's data and services.

Dive into our comprehensive guides, tutorials, references and specifications to unlock the full potential and insight that our data can offer.

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OS NGD Documentation

Learn how you can get started using OS National Geographic Database (OS NGD) data via OS Select+Build and the OS NGD APIs.

OS APIs' Documentation

Explore API references, getting started guides and examples for developing with OS APIs.

OS Download Products' Documentation

Discover documentation and guides for the OS Premium and OpenData Download products, such as OS Emergency Services Gazetteer (OS ESG), OS Multi-modal Routing Network (OS MRN), OS MasterMap Topography Layer, AddressBase Premium, OS VectorMap Local, OS MasterMap Imagery Layer, OS Open Zoomstack, and Boundary-Line.

More than Maps

A one-stop shop for all your technical geospatial support. Access a range of information via an easy-to-use site that includes tutorials and demonstrators

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Help & additional resources

Discover more resources that can help you build with Ordnance Survey data and services:

OS Data Hub support

Help with setting up an account, using our products and contacting us.

🆕 OS NGD Product Viewer tool

An interactive demonstrator of OS National Geographic Database (OS NGD) data that lets you visualise product sample data online for three areas.

Customer support and resources

Product support, licensing guides, information on our data and help with your accounts.

OS MasterMap Product Viewer tool

An interactive demonstrator of OS data that lets you visualise product sample data online for three areas.

Sample data for numerous products is available through the tool, including OS MasterMap Topography Layer, AddressBase Premium, OS Open Roads and OS Open Zoomstack, amongst others.

OS on GitHub

View mapping projects and collaborate with other developers using OS data.

OS Developer Blog

Demos showing you how to integrate OS Data Hub APIs into web applications.