In which English county is Bletchley Park located?

Bletchley Park is located in the English county of Buckinghamshire.

The estate stands in Bletchley, now part of Milton Keynes in Buckinghamshire, England. During the Second World War it became the principal centre of Britain’s Government Code and Cypher School, where mathematicians, linguists and intelligence specialists worked to read Axis communications.

Alan Turing was among the codebreakers based there. The site is especially associated with efforts against the German Enigma cipher, although Bletchley’s work covered many systems and produced intelligence known as Ultra. The wartime operation also involved major contributions from figures such as Gordon Welchman, Hugh Alexander and Bill Tutte.

The county can be confused because Bletchley is relatively close to Oxfordshire, Hertfordshire and Warwickshire. Administratively, however, the historic estate is in Buckinghamshire. Today Bletchley Park is a museum and heritage site, while the surrounding town forms part of Milton Keynes.