Cookies are small files stored on your device when you visit a website. We use some essential cookies to make this website work.
We would like to set additional cookies to remember your settings and understand how you use the site. This helps us to improve our services.
You have accepted all additional cookies. You have rejected all additional cookies. You can change your cookie preferences at any time. Hide
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.
Loading search results
Dewis pwnc arall neu clirio pob hidlydd.
Information on the data, methods and assumption setting process used to produce the 2022-based national population projections.
Methodology on the comparison of national population projections from 1971 to 2022 with population estimates, births, long-term international migration, and deaths, including measures of error.
The data sources and methodology used to produce migration assumptions in the 2022-based national population projections.
The data sources and methodology used to produce fertility assumptions in the 2022-based national population projections.
The data sources and methodology used to produce mortality assumptions in the UK 2022-based national population projections.
Quality and Methodology Information for the Wealth and Assets Survey, detailing the strengths and limitations of the data, methods used, and data uses and users.
Quality and methodology information for personal well-being in the UK, including strengths and limitations, methods, and data uses and users.
Application of a new interim modelling approach which estimates the probability of general health status for use in health state life expectancy publications.
Linkage methodology and quality information for 2021 Census linkage to DWP (Department for Work and Pensions) master key and encrypted NINo (National Insurance number).