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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 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.
Quality assurance (QA) assessment of the end-to-end processes in compiling Living Costs and Food (LCF) survey data.
Quality and Methodology Information (QMI) for admin-based income statistics in England and Wales, detailing the strengths and limitations of the data, methods used, and data uses and users.
Quality, methodology and comparability information for data used to calculate excess all-cause mortality for the UK, its constituent countries and European countries and their regions as reported in Comparisons of all-cause mortality between European countries and regions. Includes methodology for calculating measures of excess mortality, quality of the data sources, comparability of the measures and how to interpret the data.
How we checked and adjusted the estimates of the population for Census 2021 to improve their plausibility and consistency with other sources.
Methodology for the coverage adjustment of Census 2021 in England and Wales.
Matching Census 2021 to the Census Coverage Survey (CCS) using deterministic, probabilistic, associative, machine learning and clerical methods.
Methodology for the alternative household estimate and how we used it to validate final dual system estimation (DSE) estimates.
How we maximised the quality of Census 2021 population estimates during the processing and quality assurance of the final statistics.
Methodology explaining the approach to the qualitative research exploring the lived experiences of Gypsy and Traveller communities.
