ONS Postcode Directory User Guide: Content, Methodology, and Quality Notes

A 985 KB HTML user guide for the May 2016 ONS Postcode Directory, published by the Government Digital Service. The document details directory content, data currency, methodology for assigning areas to postcodes, data formats, quality limitations, and recent changes. Various annexes and tables provide supporting information.

Use Cases

• Understand postcode-to-area assignment methodology based on the described methodology section.
• Assess data quality and limitations for geographic analysis based on the data quality and limitations section.
• Review recent changes impacting postcode data based on the details of recent changes.
• Reference data formats and currency for integration planning based on the data formats and currency sections.

Strengths

• Includes a detailed user guide covering methodology, quality, and changes.
• File size is specified as 985 KB, indicating substantive documentation.
• Published by the Government Digital Service, suggesting an authoritative source.

Limitations

• Documentation metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.
• The guide is for the May 2016 version, which may be outdated for current applications.

Provenance

Source

Government Digital Service

Collection Method

Methodology for assigning areas to postcodes is described in the guide.

Time Range

May 2016

Freshness

Last updated 2025-08-11 07:49:00; freshness should be verified.

Geography

United Kingdom (implied by ONS and postcode reference)