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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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Methodology information for the Adult smoking habits in the UK annual statistical bulletin
Quality and Methodology Information (QMI) report for retail sales output in Great Britain, detailing the strengths and limitations of the data, methods used, and data uses and users.
Information on the methods used to produce the 2022-based household projections for England.
Quality and Methodology Information report for household projections for England.
Detailed description and insight into the development of the ONS’s new Price Index of Private Rents methodology and comparison with the ONS's old Index of Private Housing Rental Prices methodology.
Quality and methodology Information for Unexplained deaths in infancy: England and Wales, detailing the strengths and limitations of the data, methods used and data uses and users.
Quality and Methodology Information (QMI) report for the Producer Price Index, detailing the strengths and limitations of the data, methods used, and data uses and users.
Quality and methodology information (QMI) for the Services Producer Price Indices. Includes strengths and limitations, methods, and data uses and users.
Quality and methodology information (QMI) for annual mid-year population estimates of the very old, including centenarians. Includes strengths and limitations, methods, and data uses and users.
What the population estimates by marital status and living arrangements cover, how we produce them, and their quality and comparability. Includes definitions and latest, past and upcoming changes.
