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Developer Portal

Access the data services of National Highways, which provide valuable

information about the UK's strategic road network

NEWS & EVENTS

2025-05

Minor updates and fixes released across all data services

Developer Portal: Minor content updates | Data services: Minor performance updates | See release notes for more detail

2025-06

Road and Lane Closure v1.0 retired as of 11 June 2025

Road and Lane Closures v1.0 is now retired, it is no longer supported and will not receive any new data.

Please use v2.0 of Road and Lane Closures to access planned and unplanned closures

2025-03

Road Limits and Features API v1.0 released | Road and Lane Closures API v2.0 updates

Speed Managed Areas API v1.0 updates

See release notes for more detail

2025-02

Road and Lane Closures API v2.0 released | Speed Managed Areas API v1.0 released

Road and Lane Closures API v2: Updated schema and improved refresh cadence | Speed Managed Areas API v1.0 launched | See release notes for more detail

2025-02

Diversion Routes Spatial Dataset released | Updates to Developer Portal

Diversion Routes spatial dataset released on National Highways Open Data Portal | See here for more detail | Developer Portal: Minor content updates and issue/feedback capture

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3. Access our APIs

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Explore APIs

Our Data Services

National Highways Digital Lab has a roadmap to deliver a number of datasets

Please investigate our APIs and data services below to find out more

Road and Lane Closures

Road & Lane Closures

___ Access planned and unplanned __ road and lane closures

Get started

Digital VMS

Digital VMS

__ Access messages being displayed on digital signs across the network

Get started

Speed Managed Areas

Speed Managed Areas

_Access speed limits due to planned works and unplanned events

Get started

Road Limits and Features

Road Limits & Features

Access information relating to different features of the network

Get started

Diversion Routes

Diversion Routes

Access a spatial dataset covering agreed diversion routes

Learn more

National Highways Open Data Portal
Open Data
This open data site enables open access to the definitive source of geographical datasets at National Highways.
Open Site

Don't see your query here, head over to our FAQ section for more guidance

Frequently Asked Questions

Contact Us

If you've been using our APIs and come across a bug or had difficulty with the developer portal, just go ahead and submit an issue.

And if your enjoying the experience or think there's more that we can do for you, we'd love to hear your feedback!

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