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Codebreaker to Artist: A WWII Hero's Diverse Life
29 Jul
Summary
- John Croft deciphered Soviet ciphers and broke German Lorenz codes at Bletchley Park.
- He later worked at the Home Office, heading its Research Unit.
- After retiring, Croft became a respected abstract artist with solo exhibitions.

John Croft, a distinguished figure who transitioned from Bletchley Park codebreaker to abstract artist, passed away at the age of 103. During World War II, Croft played a vital role in deciphering critical German Lorenz ciphers and Soviet messages. He initially studied history at Oxford before being recruited for intelligence work in 1942.
His wartime service included breaking the complex Lorenz system, codenamed Fish, used for high-level communications, and later working on Soviet cipher systems. Following the war, Croft joined the Home Office, eventually leading its Research Unit. After retiring in 1981, he embarked on a new chapter as a celebrated abstract artist.
Croft's art, characterized by non-figurative and minimalist landscapes, garnered critical acclaim. His paintings were exhibited from the 1960s onward, including solo shows at the University of Sussex in 1970 and the University of Warwick in 1971. He was honored with a CBE in 1982.