Guest Stars James Grout as Chief Superintendent Strange Clare Holman as Dr Laura Hobson Phyllis Logan as Julia Stevens Tony Haygarth as Ted Brooks Jasper Jacob as Michael Mansell Christopher Ashley as Policeman Dominic Brunt as Detective Amanda Ryan as Kay Brooks Josephine Clarke as Nurse Andrew Spooner as Lab Detective Bernard Brown as Dr Felix McClure Nicky Goldie as Policewoman Susie Fairfax as Nurse Luke Pursey as Student Stephen Tindall as Lab Detective Andrew Blair as Constable Judi Armstrong as Receptionist Kate Anne as Student Virginia Grainger as Hospital Sister Richard Wellings-Thomas as Policeman Steve Edwin as Waterman Shane Hickmott as Kevin Costyn Richard Claxton as Student Angela Catherall as Mrs Barnett Jason Riddington as Ashley Davies Lynn Farleigh as Jane Cotterell Gabrielle Lloyd as Brenda Brooks Jeremy Peters as Trainer Chloe Tucker as Student Benjamin Whitrow as Brownlee Nadim Sawalha as Dr Hassan