Operation Bletchley

Why not sign up Operation Bletchley, a virtual codebreaking challenge? Choose your mission to cover either 50 or 100 miles on foot and crack the codes as you go. Choose your difficulty level, from junior to expert. It’s a challenge the whole family can complete this summer.

Our Operation Bletchley collection offers a range of books to practice your skills and the all important notebook and pen for cracking those codes. Good luck!
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