John Croft obituary
Codebreaker at Bletchley Park who later worked at the Home Office and became a successful abstract artistJohn Croft, who has died aged 103, was a codebreaker at Bletchley Park in Buckinghamshire during the second world war, and subsequently in London, where he worked on Soviet cipher systems used to send secret messages to European communist parties and sympathisers.Croft was studying history as an undergraduate at Christ Church, Oxford, in 1942 when his tutor asked if he might be interested in…
Source: www.theguardian.com