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OS for Developers

Making Great Britain’s trusted location data accessible through OS mapping and data APIs

Get inspired with location data through OS mapping and data APIs

Sign up to OS Partner Week: 23-27 November

For OS Partners, OS Data Hub users, Geovation members and those interested in partnering, our virtual event will hold daily webinars, talks and downloadable resources. Themes include products and innovation, and technical updates.

Tools to get you started

Copy-and-paste code examples in mapping libraries including Mapbox GL JS, Leaflet, OpenLayers and ArcGIS API for JavaScript.

API documentation

Our overviews, getting started guides and technical specifications contain all the information you need to understand and use our maps and data.

Check out our access plans

With our new pricing it's easy to find the right plan for your needs. Get started for free and upgrade to make the most of our free monthly allowance.

Get best use from our APIs

Quick start

Get started with basic background mapping, and GeoJSON and GPX overlays.

Web development

Build location web apps with destination locators, scroll stories and find nearest features functionality.

GIS application

Modelling and mapping using OS data.

Data science

Understand how to complete spatial data analytics in IPython Notebooks with Premium and Open Data from the OS Data Hub along with other sources of data.

Developer blog

Mapping a personal journey with OS OpenData

Liam Mason, spatial analyst and cartographer for the Scottish Government, tells us how he mapped a personal journey with OS OpenData.

Data visualisation

Data visualisation is the representation of information or data in a visual format.

Using OS data to accurately identify environmental risk to a property

Balkerne enables property owners and insurers to prevent losses from manmade and natural events. Co-founder Harish Pesala shares how they're using OS data.

OS Data Hub to canvas: bring your favourite GB locations to life

Using OS OpenData and ArcGIS Pro, learn how to make your own map and print it on to canvas.

Location data making a difference

Using OS data to help fix the housing market

Sprift, a UK tech start-up and OS Partner, has used brought together location intelligence on any property in the country, in one place, online.

The mobile app that makes exploring the British countryside easy

Using Ordnance Survey’s API, the Outdoors GPS app helps outdoor enthusiasts find their way – by providing OS Maps at any time, in any location – both on and offline.

Up-to-date maps in minutes

How location data saves both time and money for the National Library of Scotland


Support from OS Developers

Can’t find what you are looking for from the resources available? Check out our GitHub repositories and raise an issue with our developers on GitHub.


If your startup needs location or property data and expertise to succeed, our accelerator programmes, community events and hands-on development resources will help guide you.

Community Support

You can use the popular developer Q&A site GIS Stack Exchange to raise your technical questions. Be sure to tag your questions with ordnance-survey and any other relevant tags.