OS Linked Identifiers API

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

  • Identifiers
  • API
  • OS OpenData Plan (FREE)
  • Premium Plan
  • Public Sector Plan
  • Energy & Infrastructure Plan

This product is updated every six weeks

Representation of data provided
Representation of data provided
© Crown copyright and database rights. Ordnance Survey 2024

What OS Linked Identifiers API provides you with

Up-to-date relationships

Benefit from the valuable relationship found in OS Premium Data. Link together datasets that are using different identifiers; for example, linking a property address (UPRN) to the street that it’s on (USRN).

Detailed, searchable data

The OS Linked Identifiers API gives direct access to identifiers for a large number of feature types such as address records, building outlines, road surface area, road names, road sections and street records as well as the relationships between them that we provide links for.

Easy to integrate

OS Linked Identifiers API conforms to RESTful OpenAPI v3.0.2 specification and returns data in a readable JSON format. These standards integrate well with JavaScript and support the creation of sophisticated interactive map web applications in conjunction with our OS Maps API, OS Vector Tile API and OS Features API.

Reduce your overheads

No need to download, store and manage large and complex datasets, we take care of that so you can focus on adding value.

OS Linked Identifiers API

Technical information

© Crown copyright and database rights. Ordnance Survey 2024

Specifications

Use cases

Web developers can create clickable interactive web app maps for selection of road or building features. Search for a street name and highlight all the properties that are on it or visualise open data such as accident counts, pollution levels or average vehicle speed data using OS Open Roads

Access
  • API
Data theme
  • Multiple
Data structure
Vector - Identifiers
Coverage
Great Britain
Scale
1:1250 to 1:10,000
Format
  • GeoTIFF
OS Data Hub plan
  • OS OpenData Plan (FREE)
  • Premium Plan
  • Public Sector Plan
  • Energy & Infrastructure Plan

Documents and Support

Technical specification

Supporting documents

  • OS Linked Identifiers API - Overview
    The overview introduces the product and gives context for all users. It highlights key features, provides examples of potential uses for the product and lists details like file sizes and supply formats.
    link

Additional information

Geometry and attribution access

The OS Linked Identifier API only provides details of the related identifiers. Once you have the related identifiers, you can retrieve geometry and attribution via the OS Features API from either our OS Open Identifiers or Premium products.

OS Linked Identifiers API

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What you get

Key features
  • Up-to-date relationships
  • Detailed, searchable data
  • Easy to integrate
  • Reduce your overheads
Category
Identifiers
Access
  • API
Data structure
Vector - Identifiers
Update frequency
Every six weeks

How to access

OS OpenData APIs are free

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Take the next step by signing up to the OS Data Hub and create your first project today.

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Further support

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