Identifiers Portfolio Information

This page provides an overview of the OS downloadable products in the Identifiers Portfolio.

Identifiers products

Identifier products provide a dataset of unique identifiers for a wide range of landscapes and built environment features for projects that require greater data connectivity. The following downloadable products are available within the Identifiers Portfolio:

OS Open Linked Identifiers

An open dataset of cross-referenced identifiers detailing relationships between Unique Property Reference Numbers (UPRNs), Unique Street Reference Numbers (USRNs) and Topographic Identifiers (TOIDs).

OS Open TOID

An open dataset of unique identifiers for landscape and built environment features with a generalised location extracted from OS MasterMap products.

OS Open UPRN

An open dataset enabling linking, sharing and visualisation of data related to Unique Property Reference Numbers (UPRNs).

OS Open USRN

An open dataset containing all Unique Street Reference Numbers (USRNs) from OS MasterMap Highways Network.