General surgery, upper GI surgery, abdominal wall hernias, hiatus hernia, gastroesophageal reflux, achalasia, gastric cancer, oesophageal cancer, oesophageal perforation, Boerhaave syndrome, oesophageal stricture and caustic oesophageal injury.

Peptic ulcer, Barrett’s oesophagus, gallstones, cholecystectomy, bile leaks, biliary injury, oesophagectomy, gastrectomy, anastomotic leak and chyle leak. Complications of bariatric surgery.