The Great British Sewing Bee, BBC Two, 8pm

New series of the show which aims to find Britain's best amateur stitcher - or the best of those who haven't yet won this by-now-annual TV competition. As ever, suave tailor and Savile Row denizen Patrick Grant returns alongside May Martin from the Women's Institute to provide the expertise, and they're joined by regular presenter Claudia Winkleman. In tonight's opening episode the 10 new contestants have to work with cotton. Their first task is to make a pair of women's trousers - complete with invisible zip - and then it's a race against time as they try to run up a denim skirt for a real-life model in just 90 minutes.

Bloody Sunday, ITV3, 12.05am

Two years before he made The Bourne Supremacy and a decade before he was Oscar-nominated for Captain Phillips, British director Paul Greengrass tackled Don Mullan's book about the events of Sunday January 30 1972, when 13 civilians were shot dead by British soldiers during a march in Londonderry - the bloody Sunday of the title. Here we see Greengrass's trademark documentary style - handheld cameras grabbing fast, shaky shots - and a cast led by James Nesbitt, as SDLP founder and MP Ivan Cooper, the organiser of the march. Tim Piggot-Smith and Nicholas Farrell also feature. Powerful stuff.