Pacemakers and ICDs

Jonathan Timperley is a Consultant Cardiologist at Northampton General Hospital, and an Honorary Consultant Cardiologist at the John Radcliffe Hospital, Oxford. He is highly experienced in managing a range of cardiac diseases, including coronary artery disease, heart failure, arrhythmia, and cardiomyopathy. Dr Timperley has a specific interest in aviation medicine.
After studying medicine at the University Leeds, he underwent specialist training at the Royal Brompton Hospital in London, and was awarded his research Doctorate in Medicine with commendation from the University of Leeds in 2007.
Dr Timperley became a consultant in the Defence Medical Services and was deployed to Afghanistan and Iraq. He is an expert in implantation of pacemakers, implantable cardioverter degibrillators, and biventricular devices for the treatment of heart failure.


Paul Leeson is Professor of Cardiovascular Medicine at the University of Oxford, Research Fellow at Wolfson College and Head of the Oxford Cardiovascular Clinical Research Facility. He is also a Consultant Cardiologist at the John Radcliffe Hospital, where he provides expertise in Cardiovascular Imaging, General Cardiology and Cardiovascular Prevention through the Oxford Specialist Hypertension Clinic.
He heads the Preventive Cardiology Research Group, which aims to improve how we identify and prevent heart disease in young people. The group uses cardiac and vascular imaging, in conjunction with laboratory-based studies, to characterise early patho-physiological changes that predispose to cardiovascular diseases, such as, hypertension. There is a particular focus on the long term impact of pregnancy complications, such as preeclampsia and preterm birth, on both mother and child.

Andrew Mitchell is a Consultant Cardiologist at Jersey General Hospital and an Honorary Cardiologist at the John Radcliffe Hospital in Oxford. He studied medicine at the University of Southampton, and is a member of the British Cardiovascular Society, American College of Cardiology, and European Society of Cardiology amongst others. His specialist interests include advanced echocardiography and the non-drug therapy for arrhythmia management. He has published over 130 papers and abstracts on aspects of clinical cardiology. In 2016 he was a finalist for the Cardiology Team of the Year in the British Medical Journal awards.


Timothy Betts is a Consultant Cardiologist and the Clinical Lead for Cardiac Electrophysiology at Oxford University Hospitals NHS Foundation Trust. His research interests include emerging technologies for atrial fibrillation and other arrythymias, and in cardiac resynchronisation therapy to treat heart failure, including the electrophysiological and functional benefits of LB endocardial pacing. He trained in Cardiology internationally, and is a member of the British Heart Rhythm Society and the British Cardiovascular Society.