Produced by Hartswood Films, part of ITV Studios, and written by Steven Moffat (Sherlock, Dracula, Inside Man) in his first project for Channel 4, first look images have been released of Rafe Spall (Trying, The English) as the Prime Minister, Katherine Kelly (In Flight, Mr Bates vs The Post Office) as the Chief of Staff and Jenna Coleman (The Serpent, The Sandman) as the Deputy Chief of Staff alongside the Chief M