Ashton is Head of Medical Affairs for Roche Diagnostics UK & Ireland where he leads a team responsible for clinical research across oncology, cardiology, neurology, infectious diseases, critical care and women’s health. He holds an MBBS and a B.Sc. in physiology and pharmacology from University College London. He trained as a gastrointestinal surgeon in the NHS achieving membership of the Royal College of Surgeons. During his career he has initiated numerous interventional clinical trials in a range of therapeutic areas, has lectured across the globe and has published in the fields of surgery, gastroenterology, neurology, infectious diseases and microbiology.