The Imitation Game has lured her back into one of her favourite eras, the Forties, after Atonement and the underrated Dylan Thomas biopic The Edge of Love (2008), in which she gave one of her most arresting and drop-dead-gorgeous performances. This time, her look isn’t so much glamorous Blitz evening-wear as bluestocking chic. She gets some lovely cardigans. “I do like the Forties. I like British films of that period because they’re so alien to what film is now. I suppose it’s do with conflict zones, and how behaviours change. You have this image of a very proper, very uptight society, but the fact is that STDs were going through the roof, and women were having babies outside marriage and everything. Suddenly you see it in a completely different context.”