Dr Jonathan Knowles is a surgical associate/advanced clinical fellow in Colorectal Surgery. He completed his medical training at University College London in 2000 and then trained in general and colorectal surgery. Since 2013 he worked as a colorectal surgeon at the Royal Free Hospital in London. Dr Knowles has expertise in minimally invasive and open colorectal surgical procedures as well as in anorectal operations. This includes a wide spectrum of colorectal conditions including inflammatory bowel disease, colon and rectal cancer, diverticular disease and anorectal disorders. Dr Knowles completed a Masters in Surgical Science and is a Fellow of the Royal College of Surgeons (2012). At New York-Presbyterian/Columbia University, Dr Knowles works collaboratively with Dr Pokala Ravi Kiran obtaining additional exposure to complex and reoperative colorectal surgery.