For Researchers

The national Trusted Research Environment for longitudinal research, UK LLC is part of the COVID-19 Longitudinal Health and Wellbeing National Core Study.

UK LLC brings together de-personalised data from the UK’s well-established Longitudinal Population Studies (LPS) and links it with health and non-health data. This includes NHS COVID-19 data related to infections, testing and vaccinations, as well as wider health implications including mental health and wellbeing.

These data are held in a Trusted Research Environment (TRE) provided by SeRP UK at Swansea University. Work is underway to add environmental exposure data to the resource.

Additional funding has been awarded to expand our work on the potential for administrative data linkages to LPS data. Please check this page for progress updates.

Our services permit safe access to the TRE to large numbers of UK based researchers so they can conduct COVID-19 research investigations using data from multiple LPS linked with health and non-health data.


Who can apply to access the data?

How to apply to access the data?

Data Access and Acceptable Use Policy

UK LLC TRE User Guide


How-to-Guides – step-by-step guides on navigating the TRE and using the software options within the environment.


UK LLC portal on the HDR UK Innovation Gateway