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.

Using the ONS LS
Find out how to access and use the data

Research
ONS LS research projects and the resulting outputs

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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Further update about the transition from the SRS to the IDS
Please see this 15 July 2024 message from ONS.
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Update from ONS on timescale of availability of 2021 LS data
The ONS previously reported that they were aiming for the updated LS research database to be available in the second half of 2024, dependent on data processing running smoothly. Unfortunately, this has not been the case and due to processing and resource issues they are having to delay the release of the 2021 LS research database until early Summer 2025. ONS apologises for any inconvenience this delay will cause and appreciates this is a significant change to the dates from those initially advertised.
Link
Email celsius@ucl.ac.uk
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Linking our Lives: England and Wales since 1971
The Blog
Check out the blog edited by journalist and author Fran Abrams and CeLSIUS PI Nicola Shelton
The Podcast
Tune into our podcast to hear directly from researchers about the work they are doing and why it matters. Presented and edited by former BBC journalist Chris Garrington.