CeLSIUS

We enable research using the Office for National Statistics (ONS) Longitudinal Study - the largest nationally representative longitudinal dataset in the UK

Longitudinal studies follow the lives of individuals over a long period of time, showing us how people are affected by changes in society. The ONS Longitudinal Study (LS) contains the census data and some life events data of approximately one million sample members, collected over 40 years. CeLSIUS is funded by the ESRC to provide free support to researchers wishing to use this data.

About the ONS LS

Find out more about the study

Using the ONS LS

Find out how to access and use the data

Data dictionary

Look up the variables in the study

Resources

Information and guidance to help you use the data

Research

Current and past ONS LS research projects and the resulting outputs

About CeLSIUS

Meet the team

Linking our Lives Blog

Our blog showcases outstanding research using the ONS LS

Linking our Lives Podcast

In conversation with researchers and users of ONS LS research

Research and policy briefs

Policy and research briefing notes on research using the ONS LS

News and events

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ONS research plays key role in children’s social care review

The latest Linking Our Lives blog highligts the ONS LS research that contributed to the recent Independent Review of Children’s Social Care, particularly the findings from the Looked After Children Grown Up project which had a key role in providing evidence to the review.

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New thematic guides to using ONS LS data

There are three new guides, on discrepancy variables, imputation flag variables and international migration data in the LS.

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More news and events

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