The film The Imitation Game has cast new light on the figure of Alan Turing and the work done at Bletchley Park during World War II. Many of the greatest minds who worked at the secret location were woman who, after the war, returned to their lives without ever telling anyone about the work that they did.
There's a campaign under way in Britain to press the government to issue an apology in the case of Alan Turing. Anchor Lisa Mullins finds out more about the campaign from Richard Gill.