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The ONS Longitudinal Study

The ONS Longitudinal Study (LS) contains linked census and vital event data for 1 per cent of the population of England and Wales. Information from the 1971, 1981, 1991 and 2001 Censuses has been linked across censuses as well as information on events such as births, deaths and cancer registrations.

  • What's new

    Recent changes / events relevant to the Longitudinal Study

  • Using the ONS Longitudinal Study

    About the Longitudinal Study: what it is, what it contains and how to access the information

  • Longitudinal study history and processes

    Why the Longitudinal Study was set up, how it has evolved, how the sample is drawn, and how the data are linked

  • Data quality in the Longitudinal Study

    Measures of the completeness of the Longitudinal Study sample over time

  • Resources and definitions

    Reference section: census forms, LS history, organisation and census quality reports

  • CeLSIUS: Data dictionary

    Link to CeLSIUS LS data dictionary website.

  • 2011 Census Link project

    Details on the project to link the 2011 Census data into the research database

  • 2011 Census Link beta test

    Details on the application process for the 2011 Census Link beta test

  • Contact the Longitudinal Study

    Address, telephone, fax and email contact details for all general queries about the ONS Longitudinal Study

Content from the Office for National Statistics.
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