Bletchley Park was occupied by the HQ of Britain's cryptanalytic and signals intelligence organisation, the Government Code and Cypher School between August 1939 and March 1946. Here some of the best brains of Britain were pitted against the enemy's enciphered communications during the Second World War. Their success forged for Britain a decisively powerful intelligence weapon which saved countless lives and helped significantly to shorten the war. 'The King hath note of all that they intend, by interception which they dream not of.' Henry V Act II Scene II