BNPS.co.uk (01202 558833)
Ruth Bourne during the war when she operated the Top Secret Bombe machine.
A new murder mystery board game based on Britain's codebreaking history is the perfect present for the ultimate puzzle solver.
Cluedo: Bletchley Park follows the same principles as the classic game everyone knows and loves, but with an 'enigmatic' twist.
During the war the country estate in Buckinghamshire housed mathematicians, linguists, chess champions, egyptologists and anthropologists all secretly working to crack Enigma, the German code machine leaders in Berlin thought was unbreakable.
It is said the 'ultra' intelligence produced at Bletchley shortened the war by between two and four years and saved thousands of lives.
Now a game to celebrate this fascinating aspect of the UK's war history has been released.
The game is now on sale in Bletchley Park's gift shop and online, priced £29.99.