The health service is seeking half a million people to sign up for the NHS COVID-19 vaccine research registry.
Signing up means you agree to be contacted by researchers to take part in COVID-19 vaccine research.
There are a number of vaccines being identified and safety-tested at the moment, but only large scale studies can give researchers the information needed about how effective they are.
Half a million people are needed for the registry by October.
Researchers are looking for people from all backgrounds, ages and parts of the UK - including both people with or without existing health conditions - to take part in vaccine studies, to make sure that any vaccines developed will work for everyone.
The service is available to anyone aged 18 or over, living in the UK. There is no obligation to join in any study, if you are contacted. But by taking part, you could help researchers find vaccines to protect us all more quickly - which in turn could help the NHS and save lives.