Dr Bach works at University Hospitals Birmingham. His clinical practice focusses upon minimally invasive treatment of colorectal cancer. He is an expert in a number of techniques that substantially reduce treatment related toxicity. These include laparoscopic ‘keyhole’ surgery, transanal ‘scar less’ endoscopic microsurgery and advanced therapeutic endoscopy. In 2019 he was awarded national training centre status by the Royal College of Surgeons and ACPGBI for transanal endoscopic microsurgery and therapeutic colonoscopy. He is chief investigator of the Cancer Research UK TREC (national) and STAR-TREC (international) studies that evaluate novel organ preservation treatments for early stage rectal cancer, as an alternative to standard radical surgery. He was awarded a place on the Australian Colorectal Surgery Training Scheme in 2008, and spent 12 months working in Melbourne. At that time Australia was considered world leading in minimally invasive abdominal and pelvic surgery and as a result he was able to accrue extensive operative experience, performing in excess of 300 major colorectal procedures, a high proportion of which were minimally invasive.