National Statistics Postcode Lookup (May 2026) User Guide

Published by:
Office for National Statistics
Last updated:
03 June 2026
Topic:
Not added
Licence:
None

Summary

This User Guide contains information about the NSUL including: directory content; data currency; the methodology for assigning areas to postcodes; data formats; data quality and limitations and details of recent changes that have impacted on the data. Various annexes and tables provide more detailed supporting information. The download includes PDF and ODT versions of the user guide. (File size - 700 KB)

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