Dr John Davies trained at Guy's Hospital and qualified with a distinctions in clinical pharmacology and medicine in 1997. He started his training in Cardiology in 2000 including specialist training in interventional coronary cardiology at St Bartholomew's, The London Chest and The Essex Cardiothoracic Centre.He completed his specialist training in 2008 and was appointed as a consultant cardiologist at Southend Hospital and The Essex Cardiothoracic Centre. He is currently the lead clinician for undergraduate cardiology teaching at Southend and the lead cardiologist at the Essex Cardiothoracic Centre. He actively participates in clinical research and lead the quality improvement team at The Essex Cardiothoracic Centre. Together, with his research colleagues they have completed and published multiple clinical trials both in collaboration with other centres and home grown studies.