The Government of the United Kingdom maintains several intelligence agencies that deal with secret intelligence. These agencies are responsible for collecting, analysing and exploiting foreign and dom
The Zimmermann Telegram as it was sent from Washington, DC, to Ambassador Heinrich von Eckardt, the German ambassador to Mexico.
A typical Bletchley Park intercept sheet of an Enigma machine message, after decryption.
MI6
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The Secret Intelligence Service, commonly known as MI6, is the foreign intelligence service of the United Kingdom, tasked mainly with the covert overseas collection and analysis of human intelligence
British intelligence agencies
…national security of the United Kingdom, military planning, public safety, and law enforcement in the United Kingdom. The four main agencies are the Secret Intelligence Service (SIS or MI6), the Security Service (MI5), the Government Communications Headquarters (GCHQ) and Defence Intelligence (DI). The agencies are organised…
SIS Building, the headquarters of MI6 in London
54 Broadway, SIS headquarters from 1924 until 1964
A young Englishman, member of the Secret Intelligence Service, in Yatung, Tibet, photographed by Ernst Schäfer in 1939
Operation Gold: the Berlin tunnel in 1956