Guest Stars Derek Riddell as Pete Shawe Peter Wight as Charlie Edwards Kate Ashfield as Yvonne Fulcher Owain Arthur as DI Sean Memory Jessica D'Arcy as Lora O'Callaghan Jake Davies as Liam O'Callaghan Ian Puleston-Davies as Mick O'Callaghan Faye McKeever as Deborah Peach Rufus Gerhardt-Williams as Aiden O'Callaghan Charlie Cooper as Kevin Reape Dominic Tighe as DS Bob Cooper Maimie McCoy as DC Tracy Joyce Stephanie Hyam as Becky Godden-Edwards Anna Wilson-Jones as Jackie Simone Lahbib as Debbie Christopher Fulford as John Godden Emma Clifford as Annette Daniel Betts as ACC Mike Veale Darcy Vanhinsbergh as Steven Edwards Orla Hill as Jennifer Fulcher Florence Howard as Sian O'Callaghan David Biscoe as Bevan Keir Charles as Robert Buckland MP Lolly Jones as Kelly Rachel Shenton as Emma Jonathan Aris as Ian Harris Golda Rosheuvel as Forensic Witness Jim Piddock as Judge Griffith Williams Dominique Moore as Miss X Lucy Briggs-Owen as Samantha Corrin Jo Stone-Fewings as Nicholas Haggan QC