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We moved them to The National Archives website, to keep this website as responsive as possible.
Please note: all historical data is still on this website.
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Linkage methodology and quality information for 2021 Census linkage to DWP (Department for Work and Pensions) master key and encrypted NINo (National Insurance number).
Linkage methodology and quality information for 2011 Census linkage to DWP (Department for Work and Pensions) master key and encrypted NINo (National Insurance number).
Important information to inform users and explain any misunderstandings around our migration statistics.
Quality and Methodology Information for domestic abuse detailing the strengths and limitations of the data, methods used and data uses and users.
Methodology for national population estimates broken down into small geographical areas – Super Output Areas, health geographies, electoral wards, Parliamentary constituencies and National Parks.
Outline of our work plan to address the recommendations of the Office for Statistics Regulation.
Quality and Methodology Information for long-term international migration statistics, detailing the strengths and limitations of the data, methods used, and data uses and users.
Quality and methodology information for mortality statistics in England and Wales, detailing the strengths and limitations of the data, methods used, and data uses and users.
Supporting information on the data used in our published marriage tables, which provide statistics on marriages that took place in England and Wales during the latest available data year.
Methods used to link Companies House persons of significant control to Census 2021 deterministically.
