The Probert Encyclopaedia of General Information

GCHQ

GCHQ (Government Communications Headquarters) is the centre of the British government's electronic surveillance operations, in Cheltenham, Gloucestershire. It monitors broadcasts of various kinds from all over the world. It was established during the Great War, and was successful in breaking the German Enigma code in 1940. Controversy arose in the 1980s when the Thatcher government banned employees at GCHQ from being members of a Trade Union, thereby implying that Union members were a threat to national security.
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