The Imitation Game Christopher soon dies from tuberculosis. When Britain declares war on Germany in 1939, Turing travels to Bletchley Park. Under the direction of Commander Alastair Denniston, he joins the cryptography team of Hugh Alexander, John Cairncross, Peter Hilton, Keith Furman and Charles Richards. The team are trying to decrypt the Enigma machine, which the Nazis use to send coded messages. Turing is difficult to work with, and considers his colleagues inferior; he works alone to design a machine to decipher Enigma. After Denniston refuses to fund construction of the machine, Turing writes to Prime Minister Winston Churchill, who puts Turing in
Mass surveillance in the United Kingdom and metadata for 30 days. A number of other GCHQ operations were revealed, including hacking into telecoms equipment, access to fibre-optic cables and programmes operated jointly with the NSA. GCHQ was originally established after the First World War as the "Government Code and Cypher School" (GC&CS) and was known under that name until 1946. During World War II, staff including Alan Turing worked on decoding the German Enigma machine, and many other foreign systems. In 1940, GC&CS was working on the diplomatic codes and ciphers of 26 countries, tackling over 150 diplomatic cryptosystems. After World War II, the United Kingdom