This file contains the ONS UPRN Directory (ONSUD) for Great
Britain as at January 2019. The ONSUD relates the Unique Property Reference
Number (UPRN) for each GB address from AddressBase® Epoch 56 to a range of
current statutory administrative, electoral, health and other statistical geographies.
The ONSUD is produced by ONS Geography, who provide geographic support to the
Office for National Statistics (ONS) and geographic services used by other
organisations. The ONSUD is issued every 12 weeks and is designed to complement
the Ordnance Survey AddressBase® product. For further technical information
about this file, please refer to the User Guide document contained within the
downloadable zip file. Please note that this product contains Royal Mail,
Gridlink, Ordnance Survey and ONS Intellectual Property Rights. (File Size -
449 MB)