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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.
Quality and methodology information for national population projections, detailing the strengths and limitations of the data, methods used and data uses and users.
The data sources and methodology used to produce migration assumptions in the 2024-based national population projections.
The variant projections, a range of scenarios with alternative demographic assumptions, used in the 2024-based national population projections.
The data sources and methodology used to produce mortality assumptions in the 2024-based national population projections.
The data sources and methodology used to produce fertility assumptions in the 2024-based national population projections.
What the families and households statistics cover, how we produce them, and their quality and comparability. Includes definitions and latest, past and upcoming changes.
What the life expectancy statistics cover, how we produce them, and their quality and comparability. Includes definitions and latest, past and upcoming changes.
What the healthy life expectancy statistics cover, how we produce them, and their quality and comparability. Includes definitions and latest, past and upcoming changes.
Guide to the main sources of crime statistics, by area of interest. Helps users to find and use statistics from multiple government departments.
Quality and Methodology Information for the Electoral registration statistics release detailing the strengths and limitations of the data, methods used, and data uses and users.
