For Researchers

The national Trusted Research Environment for longitudinal research.

UK LLC brings together de-identified 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.

We are currently transitioning from a COVID-19 resource to a general purpose research resource. If you are interested in applying for either a COVID-19 or any public good research project, please complete an Expression of Interest (EOI) via the Health Data Research UK (HDR UK) Gateway, or email us directly at

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