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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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How the ONS uses detailed statistical methods and analytical tools to assess the impact of residual seasonality on published time series.
Quality and methods information for the UK health accounts.
Quality and methodology information for our UK natural capital accounts, detailing the strengths and limitations of the data, methods used, and data uses and users.
From 2026, we intend to introduce grocery scanner data into our consumer price statistics. This methodology article gives an overview of the data and methods we will use.
Quality and Methodology Information for avoidable mortality in the UK, detailing the strengths and limitations of these data, methods used and data uses and users.
Summary of labour market datasets, providing estimates of employment, unemployment, average weekly earnings and the number of vacancies. Tables are listed alphabetically and by topic.
Quality and methodology information for Explore local statistics, our digital service to find out more about local areas across the UK. Includes strengths and limitations, methods, and data uses and users.
Quality and Methodology Information for mid-year admin-based population estimates (ABPEs) for England and Wales, detailing the strengths and limitations of the data, methods used, and data uses and users.
Quality and Methodology Information for crime levels and trends in England and Wales, detailing the strengths and limitations of the data, methods used, and data uses and users.
Quality and Methodology Information for child and infant mortality statistics, detailing the strengths and limitations of the data, methods used and data uses and users.
