Harshad K. D. H. Bhadeshia is the Tata Steel Professor of Metallurgy at the University of Cambridge. His main interest has been on the theory of solid-state phase transformations with emphasis on the prediction and verification of microstructural development in complex metallic alloys, particularly multicomponent steels. He has authored or co-authored some 700 publications including several books. He is a Fellow of the Royal Society, the Royal Academy of Engineering, and a Foreign Fellow of the National Academy of Engineering (India). Professor Bhadeshia was in 2015 appointed a Knights Bachelor in the Queen’s Birthday Honours for services to Science and Technology.