Allen Leech, best known for his role as chauffer-turned-semi-noble Tom Branson in the hit drama, Downton Abbey, has been cast in The Imitation Game, a biopic based on the life of Alan Turing.
Benedict Cumberbatch and Keira Knightly are also set to star.
Turing was a prominent figure in cracking the Enigma Code, which ultimately led to the defeat of the Nazis by the Allies. Turing would then go on to assist with computer development at the University of Manchester, after the war had ceased.
However, Turing was later arrested and convicted by the UK government for homosexual behavior, as it was outlawed in 1952. His conviction led to a sentence of probation, conditioned upon his promise to undergo hormone treatment. These treatments eventually led to impotency, and his sudden death in 1954 was deemed suicide.
The film, which is set to release in 2014, will be directed by Morten Tyldum, of Headhunters, and will be financed by Black Bear Pictures.