After leaving school, Dexter completed his national service with the Royal Corps of Signals and then read Classics at Christ's College, Cambridge, graduating in 1953 and receiving a master's degree in 1958 [REF].
In November 2008, Dexter featured prominently in the BBC programme "How to Solve a Cryptic Crossword" as part of the Time Shift series, in which he recounted some of the crossword clues solved by Morse [REF].