Guest Stars Benedict Wong as Pete Cheng Philip Glenister as DCI William Bell Rebekah Staton as Liz Amelia Bullmore as Helen Preger Marc Warren as Dominic Foy James McAvoy as Dan Foster Johann Myers as Sonny Stagg Michael Feast as Andrew Wilson Tom Burke as Syd James Laurenson as George Fergus Deborah Findlay as Greer Thornton Christopher Simpson as Adam Greene Maureen Hibbert as Olicia Stagg Sean Gilder as Sergeant 'Chewy' Cheweski Rebecca Ryan as Karen Collins Shauna MacDonald as Sonia Baker Stuart Goodwin as Robert Bingham Charlie Ryan as Louis Collins Pui Fan Lee as Joy Cipriani Natasha Wightman as Sheena Gough Nick Brimble as Dept. Chief Constable Janson Peter Sullivan as Stephen's Lawyer Matt Hickey as Arty Neighbour Cara Kelly as Della's Double Andy Linden as Hotel Receptionist Simon Hoggart as Journalist