Get your buzzers ready. We get competitive this week. Can you beat Alex in spotting the links to past episodes? Who'd have thought that Gladdie Park could be so well connected? And just around the corner was a unassuming building with a big story to hide. Partly the underground bunker, and partly their contribution to code breaking in WW2. Bletchley Park was the main centre for British codebreaking. Telecoms engineer Tommy Flowers and his team at Dollis Hill provided the equipment to break the most secret of all the codes. The Lorenz code of the Gerheimschreiber machines used by German high command. And if anyone doesn't know what Taskmaster is, where have you been?

Learn more about your ad choices. Visit podcastchoices.com/adchoices