About Bletchley Park

During World War II, Bletchley Park was home to the Government Code & Cypher School, a group of thinkers, mathematicians and crossword puzzlers who came together to break the cyphers used by the Germans, Italians and Japanese.

From humble beginnings, their numbers swelled to 10,000 over the course of the war, with unimaginable successes. Breaking the infamous German Enigma cypher on a daily basis allowed both Miltary and Government to see right into the mind of Hitler himself.

It has been stated that the work of the men and women of Bletchley Park shortened the war by as much as two years, saving countess lives in the process. Not only that, but the legacy of the operation lives with us today, as it become the birthplace of computing.

One of the graetest challenges that faced Bletchley Park's most famous resident, Alan Turing, was breaking the Enigma M4 cypher. A significant improvement on the regularly broken M3 version, the introduction of this device by the German U-Boats, caused a lockout that lasted ten months The resulting havoc that rained down on the vital Atlantic convoys brought the Allies to brink of defeat.

The capture of documentation and an Enigma M4 by HMS Petard and HMS Bulldog gave the codebreakers a vital lifeline that allowed them back into Enigma. Within three months of German messages being read once more, the U-Boats began to withdraw from the Altantic.

Today, Bletchley Park's secrets can be shared and the site is open to the public nearly every day of the year. You can see the largest public collection of Enigma machines in the world, a rebuild of Turing's Bombe codebreaking machine and Colossus, the world's first programmable computer, created to break the German Lorenz code.

Bletchley Park Website


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