Government Communications Headquarters

British intelligence agency

Government Communications Headquarters (GCHQ) is an intelligence and security organisation responsible for providing signals intelligence (SIGINT) and information assurance (IA) to the government and armed forces of the United Kingdom. Primarily based at The Doughnut in the suburbs of Cheltenham, GCHQ is the responsibility of the country's 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.

Also known as...GCHQ and Government Code and Cypher School
Russia's Staggering War Losses

Russia's Staggering War Losses UK intelligence reports nearly 500,000 Russian casualties in Ukraine as GCHQ warns of escalating hybrid warfare.