Guest Stars Keeley Hawes as Emily Chiwetel Ejiofor as Paul John Simm as Ace Karen Bryson as Oonagh Bill Paterson as Theo Joseph Kpobie as Mick Mark Bazeley as Gareth Lorna Gayle as Noreen Stewart Harwood as Blinkers Steve Chaplin as Biff Philip Wright as Monitoring Officer 1 Osi Okerafor as Monitoring Officer 2 Paddy Fletcher as Bowles Stephen Tallett as Security Guard Kal Aise as Ace's Mate