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