Position: Consultant Cardiologist & Professor of Cardiac Electrophysiology
Location: London UK

Professor Mark O’Neill completed his undergraduate medical and postgraduate scientific training at University College Dublin and the University of Oxford before embarking on specialist medical and cardiology training in London.

In 2005, he undertook a specialist training fellowship in cardiac electrophysiology in Bordeaux with Professors Michel Haissaguerre and Pier Jais, specifically to develop expertise in catheter ablation of atrial fibrillation.

He joined Guy's and St Thomas' in 2009 where he now leads the clinical research group in cardiac electrophysiology.

He is a council member of Heart Rhythm UK, the training lead for EP in the London Deanery and directly supervises students towards the PhD degree at King's College London, in addition to maintaining a full clinical workload as an NHS consultant. He is a regularly invited faculty member for major international arrhythmia meetings and is widely published.