 Arthur Bonsall

Sir Arthur Wilfred "Bill" Bonsall (25 June 1917 – 26 November 2014) was director of the British signals intelligence agency, GCHQ—a post he held from 1973 to 1978.Bonsall was born in Middlesbrough on 25 June 1917, the eldest son of Wilfred C Bonsall and Sarah Frank.Educated at Bishop's Stortford College, Bonsall went on to study modern languages at St Catharine's College, Cambridge before joining the Government Code and Cypher School at Bletchley Park.