Malcolm is a National Institute for Health Research (NIHR) funded clinical lecture in surgery and an honorary colorectal surgical specialist registrar at the University of Southampton, United Kingdom. He has completed a PhD in exercise physiology, perioperative surgical risk stratification and mitochondrial energetics. During his PhD Malcolm was the Clinical Lead for the Perioperative CardioPulmonary Exercise Testing service at University Hospitals Aintree, Liverpool, UK. His research interests include the pathophysiological mechanisms of cancer therapies and prehabilitation and their effects on physical fitness, mitochondrial function, tumour microenvironment and postoperative outcomes. Malcolm has published extensively in the perioperative medicine and surgical risk arena and was awarded the British Journal of Surgery, John Farndon Prize in 2015 and again in 2017.