National Statistics UPRN Lookup User Guide: Data Content and Methodology

The National Statistics UPRN Lookup (NSUL) User Guide from April 2024 provides supporting information for a dataset linking Unique Property Reference Numbers (UPRNs) to postcodes. The guide, published by the Government Digital Service, details directory content, data currency, assignment methodology, formats, quality, and recent changes. It includes PDF and ODT versions and was last updated on the platform in August 2025.

Use Cases

• Understanding the methodology for assigning geographic areas to postcodes based on the guide's description.
• Assessing data quality and limitations for integration projects based on the documented quality information.
• Reviewing recent changes that have impacted the core dataset to ensure temporal consistency in analysis.

Strengths

• Includes detailed methodology for area assignment to postcodes.
• Provides annexes and tables with supporting information.
• Offers the guide in both PDF and ODT formats for accessibility.

Limitations

• The description does not specify column names or data schema for the actual lookup dataset.
• Row count and file size for the core data are unknown, limiting suitability assessment.
• License information for the underlying dataset is not provided.

Provenance

Source

Government Digital Service

Collection Method

Methodology for assigning areas to postcodes is described.

Time Range

Referenced data is from April 2024.

Freshness

Guide references April 2024 data; platform metadata updated 2025-08-11.

Geography

Likely covers the United Kingdom, given the 'National Statistics' and postcode context.