Government Communications Headquarters 政府通信总部

The Government Communications Headquarters (GCHQ) is a British intelligence and security organisation responsible for providing signals intelligence (SIGINT) and information assurance to the British government and armed forces. Based in "The Doughnut", in the suburbs of Cheltenham, it operates under the formal direction of the Joint Intelligence Committee (JIC) alongside the Security Service (MI5), the Secret Intelligence Service (MI6) and Defence Intelligence (DI). GCHQ is the responsibility of the UK Secretary of State for Foreign and Commonwealth Affairs, but it is not a part of the Foreign Office and its Director ranks as a Permanent Secretary.