James Ip is a consultant anaesthetist working at Great Ormond Street Hospital for Children NHS Foundation Trust in London. Grant Stuart is a consultant paediatric anaesthetist working at Great Ormond Street Hospital for Children NHS Foundation Trust in London. Isabeau Walker worked as a consultant anaesthetist at Great Ormond Street Hospital for Children NHS Foundation Trust in London from 1997 to 2019. Ian James worked as a consultant paediatric anaesthetist and intensivist at Great Ormond Street Hospital for Children NHS Foundation Trust in London from 1983 to 2023.