He is a consultant oesophago-gastric surgeon, with the focus of his clinical practice and his research being the surgical management of patients with malignant and benign (including gastro-oesophageal reflux) oesophageal and gastric disease. He has undertaken two PhDs concerning the diagnosis and management of oesophageal and gastric cancer and his current primary research interests are concerning survivorship and surveillance following oesophageal and gastric cancer treatment, and standardisation of surgical quality assessment in upper gastrointestinal surgery.