Alison Rodger, Professor of Infectious Diseases at University College London, is a world-leading researcher on HIV prevention and transmission. The PARTNER studies, which she led, signalled a potential end to the HIV endemic by showing conclusively that people living with HIV virally suppressed on antiretrovirals have no possibility of infecting sexual partners. The results underpin the global Undetectable = Untransmittable campaign, multiple guidelines including UK, CDC and WHO, and combat HIV criminalisation laws. She also led one of the largest global HIV self-testing trials which demonstrated that HIV self-testing is highly acceptable, feasible to deliver, dramatically increases HIV testing uptake & frequency, meets priority sub-group needs and could substantially reduce new UK HIV infections without causing harm.