'Grace has to confront her past'

Actress Siân Brooke on why her character is a force to be reckoned with in the new series of Blue Lights

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When Siân Brooke took her two children to the set of her Bafta-winning police drama Blue Lights, it was a proud moment. But that pride melted away when she realised her two young sons were memorising her character's X-rated language.

The actress - acclaimed for her stage work with the Royal Shakespeare Company before playing Blue Lights' Constable Grace Ellis - hadn't realised she'd be filming her most explicit and violent scenes on the same day that 12-year-old Ben and 10-year-old Archie visited the set.