Professor Beattie is a Consultant Paediatric Gastroenterologist and Honorary Professor of Paediatric Gastroenterology and Nutrition at the University of Southampton. He was also the Editor in Chief of Archives of Disease in Childhood between 2012-2017, and the past President of the British Society of Paediatric Gastroenterology, Hepatology, and Nutrition. Dr Puntis completed his undergraduate training in Southampton, followed by postgraduate training in Birmingham Children's Hospital. He was appointed consultant and moved to Yorkshire in 1990 as director of neonatal services. He developed a regional gastroenterology and nutrition service based at Leeds General Infirmary, where he is head of the multidisciplinary nutritional support team. He has a research interest in clinical nutrition, and has previously been a member of nutritional committees of the RCPCH and ESPGHAN. Professor Dhawan is a consultant in paediatric hepatology with a special interest in liver cell transplantation, immunosuppression after liver transplantation, acute liver failure, and neonatal cholestasis. He qualified as a doctor in India, and has held appointments in the USA and the UK, and has board level appointments with the European Society of Paediatric Gastroenterology, Heptatology, and Nutrition; the International Liver Transplantation Society, and the Cell Transplantation Society. He is the Clinical Academic Group Leader for Child Health and King's Health Partners. Dr Batra was trained in paediatrics and specialised in paediatric gastroenterology at Birmingham Children's Hospital, and has been working as a consultant at Southampton Hospital sicne 2011. He looks after children with a broad range of gastrointestinal conditions, but has a special interest in infant nutrition and gut motility disorders, and is part of a national motility working group with BSPGHAN. He currently leads the nutritional support services for children at Southampton Hospital, facilitating nutritional rehabilitation of children. Dr Kyrana is a paediatric hepatologist with a strong interest in nutrition and metabolism in paediatric chronic liver disease. Her training in paediatric hepatology, gastroenterology and nutrition was at King's College Hospital and Great Ormond Street Hospital, London. She holds a diploma in paediatric nutrition (RCPCH) and an MDRes in paediatric hepatology, looking at body composition and metabolic profiles of children with end stage liver disease (King's College London). She is currently a Consultant in Paediatric Hepatology at the paediatric liver unit at Leeds General Infirmary.