Operation Bletchley is your Virtual Codebreaking Challenge. Your mission is to cover either 50 or 100 miles on foot and crack the codes as you go. With brand new codes to crack for 2020. Have you got what it takes to deliver your final message before time runs out?
Alongside the original 50 mile codebreaking challenge we are delighted to announce our epic 100 mile Paris mission, taking you to the heart of Nazi controlled France as you link up with resistance fighters across the country.
With three levels of codes; junior, codebreaker and cypher expert to tackle get the whole family together this summer - you have 1 month to complete the challenge starting on the 1st July.