Guest Stars Anthony Mark Barrow as Uniformed Officer June Watson as Mrs. Havers Jennie Goossens as Receptionist Henry Cavill as Chas Quilter Bill Nighy as Lockwood Samuel Barnett as Brian Byrne John Sessions as John Corntel Lisa Stevenson as Patsy Whateley Jonathan Timmins as Arlens Paul Herzberg as Barry Summers Hilary Whitehall as Emilia Bond Yvonne Riley as Jeannie Bonnamy Alex McIntosh as Uniformed Sergeant Ben Inigo Jones as Andrews Helena Lymbery as Lab Assistant Daniel Singer as Lab Technician Martin Jarvis as Cowfrey Pitt Curtis Woodruff as Matthew Whateley Joe Sowerbutts as Harry Morant Frederick Treves as Colonel Bonnamy Jo Cameron Brown as Matron Alex Giannini as Mike Canerone William Mannering as Clive Pritchard Glyn Grimstead as Mr. Whateley Uncredited Greg Bennett as Police Constable James Cook as School Prefect