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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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The data sources and methodology used to produce migration assumptions 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.
The variant projections, a range of scenarios with alternative demographic assumptions, used in the 2024-based national population projections.
Methodology for the data collection, aggregation, analysis and presentation for the real-time indicators bulletin.
Quality and methodology information for the Business Register and Employment Survey (BRES), strengths and limitations of the data, methods, and data uses and users.
What the families and households statistics cover, how we produce them, and their quality and comparability. Includes definitions and latest, past and upcoming changes.
Quality and Methodology Information for statistics on research and development (R&D) expenditure by the UK government, detailing how the data are compiled, methods used, and data uses and users.
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.
