Denis Geoffrey Oswald (12 November 1910 – 5 February 1998) was an English first-class cricketer, educator and a codebreaker at Bletchley Park.
He left the Falklands for England with his family when he was 8 years old aboard the SS Inca.
[4] After graduating from Oxford in 1932, Oswald took up the post of languages teacher at Uppingham School.
[5] Oswald served in the Intelligence Corps during the Second World War, initially as a private.
[6] In Autumn 1942, Oswald, alongside Ralph Tester, Jerry Roberts and Peter Ericsson, founded the Testery section at Bletchley Park.