This reminds me of the film about Alan Turing, The Imitation Game. In the film the Bletchley centre is portrayed as having just come up at the 11th hour with the all important code break in time to identify U Boat plans and general military intelligence which helped change the outcome of the war. A few years ago I attended a lecture from Alan Turing’s nephew, who gave a fascinating account of his uncle’s life. It transpires that far from coming up with the code break at the last minute, this occurred during 1937/8. However sticking to the facts would have taken all the tension out of a very good movie.