Professor Newby has major interests in experimental medicine and the advanced imaging of cardiovascular disease including coronary heart disease, aortic stenosis and heart failure. He has held British Heart Foundation Programme Grants exploring the atherothrombotic effects of air pollution, and has interests in the interaction between cardiac and respiratory diseases. He has been involved in several multicentre trials and has played a major role in the conduct of the SALTIRE (Scottish Aortic stenosis Lipid lowering Trial, Impact on REgression) and 3CPO (Health Technology Assessment trial of non-invasive ventilation for acute cardiogenic pulmonary oedema) trials. He currently holds a BHF Programme Grant exploring non-invasive coronary atherothrombosis imaging. He is Chief Investigator for the SCOT-HEART trial funded by the Chief Scientist Office; a national multicentre randomised controlled trial of computed tomography coronary angiography in patients attending the Rapid Access Chest Pain Clinic. He is also Chief Investigator of the National Institute for Health Research Efficacy and Mechanism Evaluation-funded MA3RS study: a multicentre trial of magnetic resonance imaging in abdominal aortic aneurysms. He is Chief Investigator of the Wellcome Trust-funded multicentre trial:Prediction of Recurrent Events with 18F-Fluoride to Identify Ruptured and High-risk Coronary Artery Plaques in Patients with Myocardial Infarction (PRE18FFIR) trial, and the British Heart Foundation funded Dual Antiplatelet Therapy in Acute Coronary Syndromes in Scotland Trial.