UK Intelligence officer and code-cracker during World War Two, and Professor of English (from 1964 onward until his retirement) at the University of Strathclyde in Glasgow.
Clarke was an expert in future-war fiction, and his many publications include Voices Prophesying War (1966), the eight-volume British Future Fiction series (2001), and some important bibliographies. With his wife Margaret (who survives him), he produced translations and critical editions of early French science fiction.
