HW1914-2017Records created or inherited by Government Communications Headquarters (GCHQ)
Records created and inherited by the Government Code and Cypher School (GCCS) and its successor the Government Communications Headquarters (GCHQ) relating to interception of enemy communications and ensuring security of government electronic communications.
Also records of the Far East Combined Bureau and the interception and direction finding station at RAF Cheadle.
For series created for regularly archived websites, please see the separate Websites Division.