Geoffrey Timms OBE FRSE (1903–1982) was a 20th century British mathematician and cryptoanalyst.
In the Second World War he was one of the several mathematicians working alongside Alan Turing at Bletchley Park breaking the Enigma code.
[1][2] He was born in Bradford on 16 February 1903, son of Frederick Timms (1865-1947), Managing Director of a rope company, and Clara Louisa Barraclough (1867-1946).
His proposers were fellow physicians Herbert Westren Turnbull, Edward Thomas Copson, Alexander Craig Aitken and Sir Edmund Taylor Whittaker.
He officially resigned from St Andrews in September 1945 to continue working with the Foreign Office, and got a position at GCHQ.