Methodology

Information on the methods we use to produce our statistics. This includes classifications, harmonisation, best practice, geography and user guidance for a wide range of data.

  • Methodology topics and statistical concepts

    The statistical methods and techniques that underpin all our surveys and statistical outputs, and information on statistical quality and revisions policies.

  • Geography

    The framework of territorial units, boundaries and maps that provide the structure for collecting, processing, storing and aggregating data.

  • Classifications and harmonisation

    Statistical classifications provide a set of related categories in a meaningful, systematic and standard format.

  • Methodology publications

    Methodology publications and other useful information relating to each statistical theme.

  • Methodology contacts

    Advice and support on all aspects of statistical methodology.