J. Trevor Stuart is Professor Emeritus in the Department of Mathematics at Imperial College London. After obtaining his Ph.D. from Imperial in 1951, he worked at the National Physical Laboratory in the Aerodynamics Division from 1951 to 1966, before joining the Mathematics Department at Imperial in 1966. He retired in 1994. Professor Stuart was a Visiting Professor at MIT in 1956–7 and 1965–6, as well as at Brown University in 1988–9. He became a Fellow of the Royal Society (FRS) in 1974 and was awarded the Otto Laporte Award from the American Physical Society in 1985 as well as the Senior Whitehead Prize from the London Mathematical Society in 1984. He holds honorary Doctor of Science degrees from Brown University and the University of East Anglia.