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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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Dewis pwnc arall neu clirio pob hidlydd.
Supplementary information on research using administrative data for the future of population and migration statistics.
Methodology for resolving multiple responses in Census 2021 data.
Methodology for collecting and processing data on gender identity in Census 2021.
The Health Index measures health outcomes and risk factors over time, for different geographic areas. This methodology explains how we have constructed this tool.
This guidance note explains the methodology used to calculate healthcare expenditure for government and non-government financing schemes of health accounts.
Quality and Methodology Information for the International Passenger Survey detailing the strengths and limitations of the data, methods used, and data uses and users.
Discovery phase research into the feasibility of a multi-mode design for the Crime Survey for England and Wales (CSEW).
The methods used to identify prisoners as a non-household population in the NHS Talking Therapies administrative dataset.
Quality and Methodology Information for the Electoral statistics release detailing the strengths and limitations of the data, methods used, and data uses and users.
This methodology guide is intended to provide information on the methods used to collect the data, process it, and calculate the statistics produced from the Coronavirus (COVID-19) Infection Survey.
