24 Miles : 12 Codes : 12 Days. The 12 days of Christmas... but not as you know it. Something to get your teeth into during the darker months. If you haven't already, sign up to the challenge here.
Our Operation Bletchley collection offers a range of books to practice your skills, the all important notebook and pen for cracking those codes, as well as our signature Operation Bletchley hoodie, perfect for keeping warm whilst covering those miles.