Mr Simillis qualified in medicine with MBBS from Imperial College London in 2005, where he also achieved a BSc in Surgery and Anaesthesia with First Class Honours. He completed his speciality training in Colorectal Surgery and General Surgery in the prestigious North West London surgical rotation. He undertook subspecialty training in advanced colorectal cancer in the world-renowned St Mark’s Hospital and Royal Marsden Hospital. In 2020, he was appointed as a Consultant Colorectal and General Surgeon at the Cambridge Colorectal Unit at Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust. He had previously worked as a Consultant Colorectal and General Surgeon at West Middlesex University Hospital. He specialises in advanced colorectal cancer, minimally invasive laparoscopic surgery, inflammatory bowel disease, diverticular disease, and proctology. He is JAG accredited in upper and lower gastrointestinal endoscopy. After successfully completing the respective exams, he was awarded Fellowship of the Royal College of Surgeons of England (General Surgery) and Fellowship of the European Board of Surgery (Coloproctology). He has completed a Master's Degree in Healthcare Ethics and Law, at Manchester University, School of Law, which provided him with in-depth analysis and extensive understanding of every day moral and legal issues faced by a surgeon, and he is a member of the Clinical Ethics Advisory Group at his Trust. He has a strong interest and knowledge of evidence-based medical practice demonstrated by a Postgraduate Certificate in Evidence-Based Healthcare from University College London. He has been awarded a Doctorate in Medicine from University College London for his research into the optimal surgical management of colorectal cancer liver metastases. He has an impressive academic record and has published extensively in the scientific literature with over 100 peer-reviewed journal publications and book chapters. He has given numerous national and international presentations at scientific conferences, and he frequently acts as a reviewer for several high-impact peer-reviewed journals.