Professor Justin Davies is Professor of Paediatric Endocrinology at the University of Southampton, UK. His research interests include growth and imprinting disorders (including Silver-Russell and Temple syndrome), secondary osteoporosis and care for children with differences of sex development. He Co-Chairs the British Society of Paediatric Endocrinology and Diabetes Growth Disorders Special Interest Group, and is developing a standardised national approach to growth assessment and management of growth disorders.