Introduction to OS APIs

Ordnance Survey (OS) APIs provide programmatic access to OS data and services. They offer a powerful gateway to rich geospatial data that empowers organisations and developers to integrate mapping information into their applications. You can use OS APIs to display a map, retrieve detailed location information for analysis and more.

OS APIs are grouped into: Maps, Features, Search and Utility. This documentation will guide you to understand and utilise our APIs effectively, enabling you to create tailored solutions. Each API has its own overview page, technical specification, getting started guides and additional content relating to the specific API.

Maps

Features

Search

OS Names API

The OS Names API is a geographic directory containing basic information about identifiable places.

OS Linked Identifiers API

The OS Linked Identifiers API allows you to access the valuable relationships between properties, streets and OS MasterMap identifiers for free.

OS Places API

The OS Places API allows you to verify the address records you’re capturing against authoritative data from Ordnance Survey’s AddressBase® Premium and AddressBase® Premium - Islands.

OS Match & Cleanse API

The OS Match & Cleanse API allows you to correct and validate addresses providing clean and up-to-date address records that you can have confidence in.

Utility