Bletchley Park

Bletchley Park
Bletchley Park
	The mansion in 2017
Type	Codebreaking centre and museum
Location	Bletchley, Milton Keynes, Buckinghamshire, England
Coordinates	51°59′53″N 0°44′28″W / 51.998°N 0.741°W
Area	58 acres
Built	1877 (mansion), 1939–1945 (wartime buildings)
Original use	Government intelligence site
Current use	Bletchley Park Museum
Owner	Bletchley Park Trust
Website	bletchleypark.org.uk
	Location in Buckinghamshire, England Bletchley Park (the United Kingdom)

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Bletchley Park is an English country house and estate in Bletchley, Milton Keynes (Buckinghamshire), that became the principal centre of Allied code-breaking during the Second World War. During World War II, the estate housed the Government Code and Cypher School (GC&CS), which regularly penetrated the secret communications of the Axis Powers – most importantly the German Enigma and Lorenz ciphers. The GC&CS team of codebreakers included John Tiltman, Dilwyn Knox, Alan Turing, Harry Golombek, Gordon Welchman, Hugh Alexander, Donald Michie, Bill Tutte and Stuart Milner-Barry.

The team at Bletchley Park, 75% women, devised automatic machinery to help with decryption, culminating in the development of Colossus, the world's first programmable digital electronic computer.^[a] Codebreaking operations at Bletchley Park ended in 1946 and all information about the wartime operations was classified until the mid-1970s. After the war it had various uses and now houses the Bletchley Park museum.
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