Bletchley Park near Milton Keynes (very near) is famous for the codebreaking efforts of its occupants during World War 2.

As a museum though it is so much more. It is one of the best I have ever visited. We spent nearly the whole day there.

And it is not devoted merely to the breaking of the Enigma (and related) WW2 codes.

The recommended route through on our (Covid distanced) trip took us first into the section covering Bletchley Park’s Great War predecessor – the famous Admiralty Room 40.

An amusing exhibit was this one of a magazine Room 40’s denizens produced for themselves to document their activities:-

Room 40’s workers were the “brightest and best”:-

This exhibit lists the members of Room 40 who went on to the Government Code and Cypher School, Bletchley Park’s predecessor:-

I also liked the cover of this book on the Battle of Jutland:-

These document the German Naval bombardment of Scarborough:-

Room 40’s greatest achievement was the decoding of the Zimmerman Telegram:-

Its contents, with its invitation to Mexico to invade the US and promise to reward it with US territory, were the major reason the US entered the war against Germany.