Operation Bletchley: London 2023 Teaser 

Operation Bletchley is a series of codebreaking challenges taking place 4 times a year. Challenge yourself and take on one of the UK’s most innovative events with your family and friends this July. Cover 50 miles on foot as you attempt to secure a new line of communication from Bletchley Park to the Cabinet War Rooms in London.
Have you got what it takes to deliver the message before time runs out?
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