ONS UPRN Directory: Great Britain Address to Geography Links, November 2023

The ONS UPRN Directory (ONSUD) for Great Britain relates Unique Property Reference Numbers (UPRNs) from AddressBase® Epoch 105 to statutory administrative, electoral, health, and other statistical geographies. ONS Geography produces this directory, which is issued every six weeks and is designed to complement Ordnance Survey AddressBase®. The file referenced was last updated on the platform in August 2025.

Use Cases

• Link address-level data to administrative regions for analysis based on the described geography mappings.
• Enrich property datasets with electoral and health geography codes based on the UPRN linkage.
• Perform spatial joins and aggregations using the standardized property identifiers and boundary codes mentioned.
• Support address validation and geocoding systems by leveraging the authoritative UPRN to geography relationships.

Strengths

• Links addresses to a range of current statutory geographies, including administrative, electoral, and health boundaries.
• Produced by ONS Geography, an authoritative source for UK geographic services.
• Issued on a regular six-week update cycle, suggesting ongoing maintenance.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The 496 MB file size indicates a large dataset, but specific content structure is not detailed.

Provenance

Source

Office for National Statistics (ONS) Geography

Collection Method

Derived from Ordnance Survey AddressBase® Epoch 105 and related to statutory geographies.

Time Range

Snapshot as of November 2023

Freshness

Data snapshot is from November 2023; platform metadata was last updated August 2025.

Geography

Great Britain