BBC ; BBC Wales ; producer, Richard Stokes ; written by Chris Chibnall, James Moran, Helen Raynor, Catherine Tregenna, J.C. Wilsher, Matt Jones, Joseph Lidster, Phil Ford and Peter J. Hammond ; directed by Ashley Way, Colin Teague, Andy Goddard, Jonathan Fox Bassett and Mark Everest
BBC Video ; 2 Entertain ; creator, Russell T. Davies ; writers, Russell T. Davies, John Fay, James Moran ; directed by Euros Lyn ; producer, Peter Bennett