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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.
How consumer price inflation data are published, revised and supplemented with additional outputs. This is part of our technical guidance on consumer prices indices.
Quality and Methodology Information for births occurring and registered in England and Wales. Data strengths and limitations, methods, and data uses and users.
What the statistics cover, how we produce them, and their quality and comparability. Includes definitions and latest, past and upcoming changes.
An explanation of the methods used to produce the latest provisional statistics on migration flows into and out of the UK.
Quality and Methodology Information for long-term international migration statistics, detailing the strengths and limitations of the data, methods used, and data uses and users.
Methodology used to produce our provisional long-term international migration estimates.
Quality and Methodology Information for the Price Index of Private Rents, detailing the strengths and limitations of the data, methods used, and data uses and users.
Quality assurance of the administrative data used in the monthly production of the Price Index of Private Rents.
Response rates, sample size, and quality assessment of the Office for National Statistics quarterly Labour Force Survey.
Explanation and guidance on how to use the data published in the past and projected period and cohort life tables.
