Peter Denman

In 1941 Peter Denman, who has died aged 83, went up to Cambridge University from Eton to read economics, but, while still in his teens, he was recruited as a cryptanalyst at the Bletchley Park code-breaking centre.Peter was widely consulted, wrote learned articles on mathematics, and would answer all queries, no matter how trivial. Teaching was perhaps his true vocation. He leaves Cara and their children.