On returning to this country in 1992 she first worked as a Colorectal Surgical Fellow in a District General Hospital and then took up a research post at St Mark’s Hospital in Harrow to obtain an MD through the University of London.
At the beginning of 1998 she became a Consultant Colorectal Surgeon at the Middlesex Hospital and University College Hospitals in Central London and Honorary Senior Lecturer at University College London. Here she was also the surgeon in charge of line insertions for the regional haematology unit and the nutritional unit. In 2003 she took up a new post as Consultant Surgeon at St Mark’s Hospital.
Ms Vaizey is the Lead Surgeon for Intestinal Failure at St Mark’s and Director of the Physiology unit. She is also the Divisional Clinical Director for the division of surgery, St Mark’s, anaesthesia and theatre for LNWUH NHS trust. She has written 18 book chapters on her specialty interests and has over 150 papers and editorials published or in press.