OS Open Linked Identifiers
Last updated
Last updated
An open dataset of cross-referenced identifiers between various OS data products.
This product is updated every six weeks.
OS Open Linked Identifiers provides authoritative relationship between Unique Property Reference Numbers (UPRNs), Unique Street Reference Numbers (USRNs), Topographic Object Identifiers (TOIDs) and metadata to enable reliable matching and for greater data connectivity.
OS Open Linked Identifiers is a dataset containing the authoritative relationships between UPRNs, USRNs and TOIDs.
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.
Link data related to an address with its building footprint. Validate an address's UPRN with the name of the road that accesses it. Validate a street's 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 that you're accessing an authoritative source of these relationships.
The relationships are taken from our Premium Download data products and have been made open so that everyone can access them from one trusted source.
Access to this product is free through the OS Data Hub.
OS Open Identifiers Family Information – This page gives context and information about the OS Open Identifiers 'Family' of products, including explaining what identifiers are and introducing the OS identifiers (TOID, UPRN and USRN). We recommend referring to this page in combination with the Overview and Technical Specification documents for OS Open Linked Identifiers.
OS Open Linked Identifiers is part of the OS Open Identifiers 'Family' of products, which includes four OpenData products: OS Open Linked Identifiers, OS Open TOID, OS Open UPRN and OS Open USRN. The products within this family allow you to easily share information held against a range of identifiers and to link together information associated with these identifiers.