His main research interests are in the prevention of cardiovascular disease including following hypertensive pregnancy, in the context of multiple long-term conditions and when deprescribing may be appropriate. He is Chief Investigator on an NIHR Programme Grant around Postnatal Self-Management of Blood Pressure following Pregnancy Hypertension and leads the self-management theme of the Oxford Thames Valley ARC. He is Chief investigator of the OSCAR study assessing the impact of structured medication reviews in the NHS. He is joint Chief Investigator of the OPTIMISE2 trial assessing deprescribing antihypertensives in the over 75s. He is recognised internationally for his work on self-monitoring and self-management of hypertension and was the 2023 RD Wright Lecturer (Hypertension Australia). He is a Governing Body Fellow at Green Templeton College having previously been the Dean and Welfare Dean.