Gideon Lack is Professor of Paediatric Allergy at King’s College London and a member of the MRC-Asthma UK Centre in Allergic Mechanisms of Asthma. Having completed his medical degree at The University of Oxford (Lincoln College), Professor Lack then completed senior house office appointments at the John Radcliffe in Oxford. He spent four years training as a paediatrician in New York and a further four years specialising in Paediatric Allergy & Immunology in Denver, Colorado. He then became Consultant in Paediatric Allergy at St Mary’s Hospital in London in 1995 after his work in Bristol as a Lecturer in Paediatrics. Professor Lack led the Department of Paediatric Allergy and Immunology at St Mary’s Hospital, London for 12 years and became Professor of Paediatric Allergy and Immunology at Imperial College London in 2005. He joined King’s College London in 2006 as Professor of Paediatric Allergy and he is currently Head of the Children’s Allergy Service at ST Guy’s and St Thomas’ NHS Foundation Trust. In recognition for his contributions to clinical and academic medicine, he was elected as Fellow to the Academy of Medical Sciences in 2019.