Dr. William Eysenck graduated from the School of Medical Sciences at the University of Manchester in 2008, having earned an intercalated BSc in Pharmacology from the same institution in 2007. After completing his general cardiology training, he pursued a dedicated 3-year research fellowship, which led to several peer-reviewed publications. His thesis, titled 'Detection Techniques and Modern Management of Atrial Fibrillation', earned him an MD (Res) from St George's University, London.

Dr. Eysenck has undergone advanced training in electrophysiology and complex devices at several major UK tertiary centres, including St George's University Hospital, Morriston Cardiac Centre, Royal Sussex County Hospital, and Royal Brompton and Harefield Hospitals. After a 15-month tenure as a locum Consultant Cardiac Electrophysiologist at King's College Hospital, he was appointed at Lewisham and Greenwich NHS Trust to establish and lead the arrhythmia service. He also visits Royal Brompton Hospital, where he performs both simple and complex electrophysiology and device procedures.

In addition to his NHS role, Dr. Eysenck sees private patients at HCA Healthcare UK Canary Wharf Outpatients and London Bridge Hospital.