John Camm holds the British Heart Foundation Chair in Clinical Cardiology at St. George's Hospital Medical School. He graduated from Guy's Hospital and pursued a career in Cardiology at St. Bartholomew's Hospital where he was a Wellcome Senior lecturer and later the Sir Ronal Bodley Scott Professor in Cardiovascular Medicine . Professor Camm’s research is predominantly clinical and concerns all areas of cardiac arrhythmology. He has made major contributions to the identification of arrhythmic risk after heart attack and in patients with heart failure and cardiomyopathy, and in the area of prevention of sudden death in high risk patients with cardiovascular disease. His studies and clinical trials of antiarrhythmic drug therapy have been particularly valuable. Stemming from this experience he developed a very influential research theme relating to the proarrhythmic effects of antiarrhythmic drugs, especially in the form of acquired long QT syndrome and sudden cardiac death. He has also published much on clinical electrocardiographic and electrophysiologic techniques used for the assessment and treatment of cardiac arrhythmias and the design and clinical prescription of implantable devices for rhythm monitoring and rhythm control. He has been an important advisor to drug regulatory authorities and has held many senior positions in academic and clinical cardiology including Presidency of the British Cardiac Society. I know personally that his writing and lecturing is a model of clarity bringing a complex subject to a wide audience