'Line of Duty' is returning for a seventh season. (C) World Productions/Steffan Hill Share on Facebook Share on X Google Preferred Share to Flipboard Show additional share options Share on LinkedIn Share on Pinterest Share on Reddit Share on Tumblr Share on Whats App Send an Email Print the Article Post a Comment Logo text It's official: Line of Duty is back. Jed Mercurio's hit police procedural will return to the BBC for a seventh series, with stars Vicky McClure, Martin Compston and Adrian Dunbar reprising their roles.