Linking data for future research discoveries
A new phase
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Strength in partnership
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Simplified data access
Read full storyWhat is UK LLC?
UK Longitudinal Linkage Collaboration (UK LLC) is the national Trusted Research Environment (TRE) for data linkage in longitudinal research, led by the Universities of Bristol and Edinburgh. It simplifies access to linked data for research in the public good, enabling discoveries through linked associations between health, social, behavioural, and economic research.
The data held in the TRE is provided by a wonderful collection of established UK Longitudinal Population Studies whose participants have been providing data on the basis they are used for research to deliver global benefits and impact.
UK LLC enhances the study-collected data by linking participants’ health and socio-economic data and data about the environments, neighbourhoods and dwellings in which participants live.
For participants
How UK LLC works for the public good
As a participant of one of the studies taking part in UK Longitudinal Linkage Collaboration, you have kindly shared data about yourself with your study to help improve health and wellbeing.
Read our promises to participantsFor researchers
UK LLC Explore: our data catalogue
UK based researchers can apply to access data held within the UK LLC Trusted Research Environment. Over 325,000 participant records from more than 20 established Longitudinal Population Studies are linked with health, non-health and place-based data.
View our data catalogueUK LLC Guidebook: our data documentation and TRE user guide
Whether you are a researcher interested in applying to access data, already working in the Trusted Research Environment, a Longitudinal Population Study data manager or an interested member of the public, our guide will direct you to find the information you need.
View GuidebookUK LLC Apply: our application system
Longitudinal researchers and analysts who use large datasets as part of their research and are interested in the depth of detail present in Longitudinal Population Study datasets can apply now.
Start an applicationTribute to Dianna Moylan, July 2025
11th Aug 2025
We were deeply saddened to hear of the recent death of Dianna Moylan. We pass on our sincere condolences to her family and friends. Dianna was one of our very…
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UK LLC Citizen Panel paper published in IJPDS
8th Jul 2025
UK Longitudinal Linkage Collaboration (UK LLC) has launched a pioneering Citizen Panel project to involve diverse and often seldom heard members of the public in research governance. This model emphasises…
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A new era for a wide range of longitudinal health and wellbeing research
1st Jul 2025
Today, UK LLC announces new approvals from NHS providers and UK Government departments meaning linked longitudinal data held in the UK LLC Trusted Research Environment (TRE) can now be used…
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Office for National Statistics Accreditation
All applicants to our Trusted Research Environment must hold Office for National Statistics Accredited Researcher status or be enrolled on an Office for National Statistics Safe Researcher training course.
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Did you know…
We have ISO 27001 accreditation, a globally recognised gold standard in information security management.
Resource hub
A library of resources for our partner Longitudinal Population Studies
Did you know…there are a range of laws and legal principles involved in the use of data for research?
Find out moreConstellations, challenges and circular perspectives.
11th Aug 2025
The UK LLC Citizen Panel Hybrid Workshop 2 @Edinburgh Futures Institute, 25 June 2025 Introduction Constellation. What is the first thing that comes to your mind when you hear the…
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Public Good
11th Aug 2025
Steve shares his thoughts as part of our series of reflections from some of our Citizen Panel members on the second workshop held recently at the Edinburgh Futures Institute, Edinburgh.…
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