Dr Tassos Grammatikopoulos is a Consultant in Paediatric Hepatology in the Paediatric Liver, GI & Nutrition Centre at King’s College Hospital in London, and an Honorary Senior Lecturer, Adjunct Senior Lecturer at King’s College London. He has graduated from the Aristotle University Medical School in Thessaloniki, Greece and completed his general paediatric and paediatric Hepatology training in the UK. He has been awarded the Alex Mowat Prize (ESPGHAN 2006) (BSPGHAN 2021) and the Rising Star Award (ILTS 2008) for his research work. He is lead for Portal Hypertension and Pancreatic services at King’s College Hospital. He is chair of the National Paediatric Liver Advisory Subgroup, NHS Blood and Transplant Organ Donation & Transplantation Directorate, UK, chair of Pancreatitis Working Group, BSPGHAN, chair of ESPGHAN Portal Hypertension SIG, invited hepatology committee member in the Autosomal Recessive Polycystic Kidney Rare Diseases Group and a member of several other hepatology & gastroenterology societies. He has a special interest in portal hypertension, pancreatic diseases, and cholestasis. He has conducted various laboratory and clinical research projects and authored a number of original research papers on the above topics.