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We moved them to The National Archives website, to keep this website as responsive as possible.
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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 UK business demography, detailing the strengths and limitations of the data, methods used, and data uses and users.
Business demography explainer covering additional information on the impact of multiple registrations at a single postcode.
Quality and Methodology Information for the Household Costs Indices for UK household groups.
Quality and Methodology Information for the Public service productivity releases: strengths and limitations of the data, methods used, and data uses and users.
A comparison of the different types of population estimate that are published on the ONS website or planned for future publication. Includes information about whether these are official estimates of the population or used only for wider research, as well as the sources, coverage and main uses and comparability issues for the estimate.
Administrative data sources and quality assurance in the production of admin-based long-term international migration estimates published in bi-annual releases.
Response rates, sample size and quality assessment of the Office for National Statistics quarterly Labour Force Survey.
Quality and methodology information for regional consumer card spending data 2019 to 2023 derived from aggregated and anonymised Visa card spending data.
Quality and Methodology Information for experimental estimates of UK quarterly greenhouse gas emissions, detailing methods used, data it provides, and strengths and limitations