During World War II, a country house in Buckinghamshire hosted some of the UK’s top minds as they worked to crack enemy communications, most famously the German Enigma cipher. It is estimated that breakthroughs at Bletchley Park shortened the conflict by at least two years, saving over 14 million lives.

But why was Bletchley Park chosen, and what was life like there during the war? Who were the brilliant scientists working tirelessly behind its walls? And when did the veil finally lift on the shadowy world of wartime intelligence?

This is a Short History Of Bletchley Park.

A Noiser podcast production. Hosted by John Hopkins. With thanks to Tessa Dunlop, author of The Bletchley Girls.

Written by Nicola Rayner | Produced by Kate Simants | Assistant Producer: Nicole Edmunds | Production Assistant: Chris McDonald | Exec produced by Katrina Hughes | Sound supervisor: Tom Pink | Sound design by Oliver Sanders | Assembly edit by Dorry Macaulay, Rob Plummer | Compositions by Oliver Baines, Dorry Macaulay, Tom Pink | Mix & mastering: Cody Reynolds-Shaw | Fact check by Sean Coleman

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