Dawes lectured at the University of Leeds from 1947 to 1950, and at the University of Glasgow from 1951 to 1963. In 1963, he founded the University of Hull's Biochemistry department, and headed it until 1986. From 1963 to 1990 he was Hull's Reckitt Professor of Biochemistry. As director of Hull's biomedical research unit from 1981 to 1992, he led its work on polyhydroxyalkanoate bioplastics, which led to the commercialisation of Biopol by ICI.
