ONS UPRN Directory: UK Address and Postcode Reference Data

ONSUD provides a directory of Unique Property Reference Numbers for UK addresses. The user guide details directory content, data currency, methodology for assigning areas to postcodes, and data quality limitations. This guide was published in November 2024 and is provided by the Government Digital Service.

Use Cases

• Link address-level data to administrative areas based on the methodology for assigning areas to postcodes.
• Assess data quality for address-based projects based on the documented data quality and limitations.
• Understand recent changes impacting UK address data based on the details of recent changes provided in the guide.

Strengths

• Includes a detailed user guide covering methodology, quality, and recent changes.
• Data currency is explicitly addressed in the documentation.

Limitations

• The download appears to contain only the user guide (PDF/ODT), not the actual dataset.
• Row count and column-level documentation are unknown.

Provenance

Source

Government Digital Service

Collection Method

Likely compiled from official UK address and postcode registers.

Time Range

Referenced as November 2024 (Epoch 114).

Freshness

Last updated 2025-08-11 08:22:53; freshness should be verified.

Geography

United Kingdom