Justin is an Affiliated Associate Professor at the University of Cambridge. He maintains an active research programme, particularly in relation to the treatment of colorectal cancer and inflammatory bowel disease (IBD). He is Principal Investigator for several multicentre clinical trials and continues to audit his own work, presenting at national and international meetings. He has contributed to the publication of national and international guidelines for the management of colorectal cancer, IBD, emergency surgery and appendicitis.
In addition, he is the author of over 300 peer-review publications and book chapters and is the Co-Editor of two surgical textbooks. He is is often invited to lecture both in the UK and abroad.
His research in bowel cancer screening culminated in the award of a Master of Surgery higher degree from the University of Cambridge, as well as several prestigious research prizes (Patey Prize and John of Arderne Medal) and publications (including in the Lancet and Nature Reviews Cancer).