GCHQAs we become ever more aware of how our governments eavesdrop on our conversations, here is a gripping exploration of this unknown realm of the British secret service: Government Communication Headquarters (GCHQ). GCHQ is the successor to the famous Bletchley Park wartime code breaking organisation and is the largest and most secretive intelligence organisation in the country. During the war, it commanded more staff than MI5 and MI6 combined and has