<span style='font-family: "Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size: 16px;'>This is the User Guide for the National Statistics UPRN Lookup (NSUL) for Great Britain as at September 2019. The NSUL relates the Unique Property Reference Number (UPRN) for each GB address to a range of current geographies via 'best-fit' allocation from 2011 output areas. (File Size - 198 KB)</span>
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