Guest Stars Anna Madeley as Anne Sadikov Sasha Behar as Catherine Linn Richard Dillane as Theodore Platt Adrian Rawlins as Harry Bundrick Richard Lintern as Sefton Linn Ellie Kendrick as Megan Linn Nicola Redmond as Tina Daniels Diana Payan as Petra Bundrick Sian Thomas as Ingrid Nielson Martyn Whitby as John Staunton Mark Spalding as Love Lines Supervisor Crispin Redman as Dean Greely Anna Massey as Professor Margaret Gold Uncredited Christopher Fosh as Policeman Colin Dexter as Oxford Don in Dining Room Brian Teles as Forensic Technician