ONS UPRN Directory (December 2025) (Epoch 123) User Guide

Published by:
Office for National Statistics
Last updated:
23 December 2025
Topic:
Not added
Licence:
None

Summary

This User Guide contains information about the ONSUD 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 - 373 KB)

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