Experts in Bowel Care

Mr Michael Powar

Michael Powar has particular expertise in minimally invasive laparoscopic surgery for colorectal cancer, inflammatory bowel disease, diverticular disease and colorectal pelvic floor disorders. He has one of the most extensive experiences in laparoscopic “keyhole” bowel surgery in Cambridge and is involved in training the surgeons of tomorrow, running international courses and mentoring consultant colleagues.

He was appointed as a Consultant Colorectal, Laparoscopic and General Surgeon at Addenbrooke’s Hospital in 2012 following prestigious specialist training in the world-renowned St Marks and Royal Brisbane Hospitals. He is the Lead for Colorectal Pelvic Floor at Addenbrooke’s Hospital and Lead for Undergraduate Colorectal teaching at the University of Cambridge Medical School.

Mr Justin Davies

Justin Davies is an experienced key opinion leader and mentor in the field of colorectal surgery. He has been a consultant surgeon in Cambridge since 2007 and has a busy NHS practice at Addenbrooke's Hospital. He is an Affiliated Associate Professor at the University of Cambridge and a Fellow at Downing College, Cambridge. Senior national leadership roles include being President of The Association of Coloproctology of Great Britain and Ireland and Immediate Past-President of The Royal Society of Medicine Section of Coloproctology. His strong academic and educational interests have resulted in publishing over 275 peer-review publications and book chapters, and being Co-Editor of 2 surgical textbooks.

He offers private outpatient consultations during the evening, working day or on a Saturday morning, and has a particular interest and expertise in the minimally invasive treatments of haemorrhoids (piles), bowel cancer, inflammatory bowel disease (IBD - Crohn’s disease and Ulcerative Colitis) and diverticular disease. He is an expert in minimally invasive techniques, and is trained to undertake laparoscopic (multiport and single port) and robotic surgery.

Mr Heman Joshi

Mr Heman Joshi is a Consultant Laparoscopic, Robotic and Colorectal Surgeon at Cambridge University Hospitals NHS Foundation Trust, where he serves as Clinical Director of Digestive Diseases (GI Surgery and Gastroenterology). He was appointed as a Consultant in 2020 following advanced surgical training in London and Oxford and an International Fellowship in Robotic Surgery in South Korea.

He has extensive expertise in minimally invasive surgery, including laparoscopic, robot-assisted and single-port techniques. Mr Joshi is one of a small number of UK colorectal surgeons experienced in multiple robotic platforms, including both the Intuitive da Vinci and CMR Versius systems, and is an accredited robotic surgery proctor, supporting the training and development of other consultant surgeons. He is also a fully accredited colonoscopist within the NHS Bowel Cancer Screening Programme.

Mr Constantinos Simillis

Mr Simillis is a Consultant Colorectal and General Surgeon at Addenbrooke’s Hospital, where he is the Specialty Lead for Colorectal Surgery.  He qualified in Medicine with MBBS from Imperial College London, where he also achieved a BSc in Surgery and Anaesthesia with First Class Honours. He completed his speciality surgical training in the prestigious North West London surgical rotation and trained in leading university teaching hospitals. He is an accredited Endoscopist, and he is proficient in laparoscopic and robotic surgery. He was awarded a Doctorate in Medicine from University College London and a Postgraduate Certificate in Evidence-Based Healthcare. He has completed a Master's in Healthcare Ethics and Law, at Manchester University. He has published extensively in the scientific literature, and has given numerous national and international presentations at scientific conferences. He is an Affiliated Assistant Professor at the University of Cambridge.