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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.
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.
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.
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.
Methods used to create a new experimental model for estimating the size of the self-funding population in care homes in England between August 2019 and February 2020. Includes how the data are collected, processed and produced as well as definitions and data sources.
Methods used to produce the population estimates of the very old (aged 90 years and over) by single year of age and sex, UK, England, and Wales.
Methodology guidance on national and subnational mid-year population estimates for the UK and its constituent countries, which are broken down by administrative area, age, sex and components of population change.
Latest quality and methodology information on data from the COVID High Risk Group Insights Study and its use to analyse the behaviours and well-being of clinically extremely vulnerable people.
