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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.
User guidance on continuing to use the 2018-based subnational population projections (SNPPs) in the absence of 2020-based SNPPs. Links to information about the uncertainty of the mid-2020 population estimates and an outline of our plans for the integration of Census 2021 data into future SNPPs.
The data sources and methodology used to produce migration assumptions in the 2020-based interim national population projections.
The data sources and methodology used to produce mortality assumptions in the 2020-based interim national population projections.
The data sources and methodology used to produce fertility assumptions in the 2020-based interim national population projections.
Information on the data, methods and assumption setting process used to produce the 2020-based interim national population projections.
Quality and Methodology Information for population of the UK by country of birth and nationality, detailing the strengths and limitations of the data, methods used, and data uses and users.
An introduction to the main concepts that underpin international migration statistics, including answers to frequently asked questions.
The aims of this user guide are to provide guidance and examples for those wishing to understand and use variant projections in policy and planning.
Quality and Methodology Information for local area migration, detailing the strengths and limitations of the data, methods used, and data uses and users.
