This file contains the National Statistics UPRN Lookup (NSUL)
for Great Britain as at March 2020. The NSUL relates the Unique Property
Reference Number (UPRN) for each GB address from AddressBase® Epoch 74 to a
range of current statutory administrative, electoral, health and other
statistical geographies via 'best-fit' allocation from 2011 Census output areas
(National Parks and Workplace Zones are exempt from 'best-fit' and use
'exact-fit' allocations). The NSUL is produced by ONS Geography, who provide geographic
support to the Office for National Statistics (ONS) and geographic services
used by other organisations. The NSUL 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 – 386 MB)