Her research interests include the prevention of HIV transmission, and she has been involved in initiatives that have resulted in a significant reduction in HIV diagnoses in men who have sex with men in London. She is also interested in the sexual and reproductive health of women, and particularly HIV positive women, and she is a passionate advocate for women’s access to HIV prevention strategies including HIV pre-exposure prophylaxis (PrEP). She was the Chair of the Writing Group for the 2015 British Association for Sexual Health and HIV (BASHH) UK national Chlamydia treatment guidelines and has contributed to other national and international sexual health and HIV treatment guidelines.