OS Open Linked Identifiers

Open data API in a single place

Provided by Ordnance Survey

Get early access to OS Open Linked Identifiers API!

Let us know and we will figure it out for you.

Dataset information

Catalog

Ordnance Survey catalog

Country of origin

United Kingdom

Updated

Created

Available languages

English

Keywords

USRN, Addresses, TOID, BLPU, Transport networks, UPRN

Datasource

Official portal for European data link

Quality scoring

Dataset description

OS Open Linked Identifiers provides authoritative relationship between UPRNs, USRNs, TOIDs and meta data to enable reliable matching; for greater data connectivity. Authoritative relationships OS Open Linked Identifiers is a dataset containing the authoritative relationships between Unique Property Reference Numbers (UPRNs), Unique Street Reference Numbers (USRNs) and Topographic Object Identifiers (TOIDs). Watch our OS Open Linked Identifiers introduction video. Better visualisation Connecting addresses with road features enables more related data to be joined together which simplifies a number of valuable workflows. Linking these features to graphical elements of OS MasterMap products enables better visualisation of the data related to them. Find all addresses on a road Link data related to an address with its building footprint. Validate an addresses UPRN with the name of the road that accesses it. Validate a streets USRN with the name of the road it relates to.

European data infrastructure with broad catalog discovery, free evaluation access and production-grade API options.

190K+

indexed dataset pages

countries and EU institutions

2019

API-first since

Free API quota

for evaluation and prototypes

SLA

history and push on production APIs

FAQ

Questions before production use

Practical answers on evaluation, licensing, freshness, versioning and support.

api.store is built and operated by Apitalks s.r.o. Company details and a direct contact path are linked in the footer for vendor checks and procurement review.

Yes. Selected APIs include a free API quota, so your team can validate coverage, freshness, response shape and workflow fit before asking for a production plan.

Often yes, but usage rights depend on the source license and dataset. We surface source, license and update metadata where available, and can help review terms before a production integration.

Maintained APIs include update metadata where available. For production integrations, we can add history, monitoring and push updates so changes are easier to detect and act on.

Production APIs can add SLA, stable identifiers, versioning support, history, push updates and direct support around the data your product or AI workflow depends on.

Didn't find the API you need?

Let us know and we will figure it out for you.

api.store Built by Apitalks

European data discovery with free evaluation access and production-grade API options.

About api.storePrivacy Terms of Service