What OS Open Linked Identifiers provides you with
Relationships between UPRNs, USRNs and TOIDs
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.
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.
The relationships UPRN and USRN are provided by the bodies responsible for the identifier schemes; and these are spatially matched to OS MasterMap features by Ordnance Survey. This means you can have confidence you're accessing an authoritative source of these relationships.
Relationships you can trust
The relationships are taken from our premium data products and being made open for the so everyone can access them from one trusted source.
- Use cases
The OS Open Linked Identifiers product provides the valuable relationships between the following features found in OS MasterMap products (TopographicAreas limited to address and road features):
- TopographicArea* (TOID): OS MasterMap Topographic Layer
- RoadLink(TOID): OS MasterMap Highways Networks – Roads
- Road(TOID): OS MasterMap Highways Networks – Roads
- ORRoadLink/ORRoadNode(GUID): OS Open Roads
- Street(USRN): OS MasterMap Highways Networks – Roads
- BLPU(UPRN): AddressBase Premium
*restricted to address and road features.
- Data theme
- Data structure
- Vector - Identifiers
- Great Britain
- 1:1250 to 1:10,000
- Ordering area
- All of Great Britain
- OS Data Hub plan
- Energy & Infrastructure Plan
- OS OpenData Plan (FREE)
- Premium Plan
- Public Sector Plan
Documents and Support
Getting started guides
- OS Open Linked Identifiers - Getting started guideThe getting started guide provides instructions for using the product in different software applications. Users with limited technical knowledge will be able to follow this guide.v1.01 mbJuly 1, 2020
- OS Open Linked Identifiers - Technical specificationThe technical specification provides detailed technical information about the product. It is targeted at technical users and software developers.v1.13.6 mbSeptember 21, 2020
- OS Open Linked Identifiers - OverviewThe 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, supply formats, etc.v1.13.2 mbSeptember 21, 2020
- OS Open Linked Identifiers - Release noteThis release note provides information about the latest release of OS Open Linked Identifiersv143.6 kbFebruary 26, 2024
Identifier version information
Open Linked Identifiers includes the latest version information for all the respective features that are referred to. In some cases, this might be a different version of the feature than what was used to form the relationship. This means that in some cases the relationship might not still be valid. To help resolve this we’ve also included a confidence value, indicating if the feature has changed since the relationship was formed, which can be used to resolve errors.
Geometry and attribution access
Geometry is not included in OS Open Linked Identifiers. You can get the geometry you need from either OS Open UPRN, OS Open USRN or OS Open TOIDs.
OS Open Linked Identifiers does not contain UDPRN, as there is 3rd party IP associated with the UDPRN.
Get this product
What you get
- Key features
- Relationships between UPRNs, USRNs and TOIDs
- Better visualisation
- Find all addresses on a road
- Authoritative source
- Relationships you can trust
- Data structure
- Vector - Identifiers
- Update frequency
- Every six weeks
How to access
OS OpenData is free
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