ONS UPRN Directory: Property-to-Geography Links for Great Britain

515 MB of data links Unique Property Reference Numbers (UPRNs) for addresses across Great Britain to statutory administrative, electoral, health, and statistical geographies. The ONS Geography team produces this directory every six weeks to complement Ordnance Survey AddressBase®. This version corresponds to AddressBase® Epoch 123 and was last updated on December 16, 2025.

Use Cases

• Enrich address data with administrative region codes based on the described geography linkages.
• Perform electoral analysis by linking properties to electoral wards and constituencies.
• Conduct public health research by associating addresses with health geographies.
• Create statistical reports aggregated by the described administrative and statistical boundaries.

Strengths

• File size is 515 MB, suggesting a substantial volume of linkage data.
• Updated every six weeks, indicating a commitment to data currency.
• Links addresses to a range of current statutory geographies as described.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• Data may reflect geographic bias inherent to the Great Britain coverage.

Provenance

Source

Office for National Statistics (ONS) Geography

Collection Method

Produced to relate UPRNs from AddressBase® to statutory geographies.

Time Range

As at December 2025.

Freshness

Last updated 2025-12-16 14:30:16; updated every six weeks.

Geography

Great Britain