Peter Clayton qualified in medicine from King’s College Cambridge and University College Hospital London. He undertook paediatric sub-speciality training at UCH, the Brompton, Guy’s and Great Ormond Street Hospitals. His laboratory training in the Institute of Child Health led to a thesis on the measurement of bile acids in plasma in children by gas chromatography and gas chromatography – mass spectrometry. He was appointed as a consultant in the Department of Metabolic Medicine at Great Ormond Street Hospital London in 1987. He was appointed Professor of Paediatric Metabolic Disease and Hepatology at the UCL Institute of Child Health in 1998. His research interests include inborn errors of bile acid and sterol metabolism, inborn errors affecting neurotransmitter and vitamin B6 metabolism, disorders of manganese homeostasis, inborn errors of fatty acid oxidation, mitochondrial disorders and peroxisomal disorders. He has been awarded various prizes for research including best research presentation at SSIEM meetings, the Horst Bickel Prize and the Komrower lectureship. He was Chairman of the Society for the Study of Inborn Errors of Metabolism from Sept 2010 until Sept 2016.