a co-production of Mammoth Screen and Masterpiece in association with ITV Studios ; written and devised by Russell Lewis ; produced by Tom Mullens ; directed by Sandra Goldbacher, Bryn Higgins, Lawrence Gough, Olly Blackburn
written by Charlie Brooker ; producer, Barney Reisz ; executive producers, Charlie Brooker and Annabel Jones ; Zeppotron, an Endemol company production for Channel 4