[1] For buildings, a UPRN provides a comprehensive, complete, consistent identifier throughout its life cycle, from planning permission through to demolition.
UPRNs and USRNs (Unique Street Reference Numbers)[4] are managed by GeoPlace,[5] a joint venture between the Local Government Association and Ordnance Survey to create a definitive national databases of addresses and streets, and are available as open data under an Open Government Licence (OGL).
[6] The Government Digital Service mandates the UPRN and USRN as "the public sector standard for referencing and sharing property and street information".
[8] It is produced by the Office for National Statistics (ONS) Geography group and is designed to complement the Ordnance Survey's AddressBase location intelligence databases.
[9] The ONSUD is issued every six weeks using information supplied by the OS AddressBase, and is available for free download in comma-separated values (CSV) format from the ONS Open Geography Portal.