Guest Stars Babou Ceesay as DC Alex Gray Tom Brooke as Brian Miller Lia Williams as Emma Barnes Taron Egerton as Liam Jay Peter Davison as Peter Faulkner Camilla Power as Tara Faulkner Lucy Speed as Louise Cornish Jessica Harris as Beverley Miller Michael Webber as Solicitor Emily Jewell as Receptionist Carl Prekopp as Derek Rosie Holden as Claire Victoria Ball as Amy Anthony Edridge as Tim Marc Small as Police Officer Harriet Ballard as Ruth Wilson Mark Powley as Jack Cornish Timothy Davies as Old Man John Biggins as Desk Officer Nicholas McGaughey as Johnny Jay Simon Wilson as Dr. Matt Whitby Uncredited Richard Herdman as Police Officer Martyn Mayger as University Lecturer / Passer By Ed Pearce as Undertaker