Welcome to the website of the UK census-based Longitudinal Studies
Here you can find out more information about the ONS Longitudinal Study, Northern Ireland Longitudinal Study and Scottish Longitudinal Study and their support units CeLSIUS, NILS-RSU, SLS-DSU
- What data do the LSs hold?
- How to apply to use LS data in your research
- Using more than one LS dataset for your analysis
Outputs
Read the latest LS outputs:
User Guides
Before you begin take a look at our User Guides, find out about using the LSs and how to apply to use the data. Read more…
Recent News
Job opportunity at the Northern Ireland Longitudinal Study
The Northern Ireland Longitudinal Study (NILS) at Queen’s University Belfast are currently recruiting a Research Assistant (Analyst) to join their... Read more...
Easter Weekend 2026 - SLS Safe Setting Closure
Easter Weekend 2026 – SLS Safe Setting Closure We will be closed from Friday 3rd to Monday 6th April 2026.... Read more...





