Guest Stars Tony Pitts as DCS Lester Hargreaves Andrea Irvine as Roisin Hastings Christina Chong as DS Nicola "Jolly" Rogerson Mark Bonnar as DCC Mike Dryden Richard Huw as Ronson Niall MacGregor as Rich Akers Henry Pettigrew as Cole Steve Toussaint as Mallick Ian Beattie as Bob Michael Nardone as Sgt. O'Neill Claire Hackett as Tessa Tara Lynne O'Neill as Lorna Liz White as Jo Dwyer Jeany Spark as Claire Tindall Philip Wright as DI Royal Breige Roche as Georgia's Mum Gavin Neilly as Georgia's Dad Roseanna Barry as Michelle Mark Asante as Custody Sgt.