Discover is a register of adults 18 and over living in North West London who are interested in health research and want to find out more about health research opportunities.
Health research can range from participating in surveys, to having your blood tested, to testing new medical devices and phone apps, and sometimes participating in clinical trials.
With your help, they want to improve healthcare services and find better ways to treat and prevent illness and disease.
The Discover register is for both healthy people and also those with a medical condition.
If you want to find out more and join the register go to their website.