 In 1952, he was appointed Professor of Theoretical Physics at King's College London, and in 1954 was appointed John Humphrey Plummer Professor of Theoretical Chemistry at the University of Cambridge, and a Fellow of Corpus Christi College, Cambridge.He was the first warden of Leckhampton House, a Corpus Christi College residence for postgraduate students.While at Cambridge he made many original contributions in the field of Theoretical Chemistry.