Guest Stars Esther Hall as Ellie Simm Natasha Little as Vicki Westbrook Lorcan Cranitch as Patrick McCann Enzo Cilenti as Carlo Franceschini Benedict Cumberbatch as Jim North Karel Roden as Miroslav Gradic Bill Buckhurst as Bomb Disposal Officer Emma Barton as MI5 Officer Teresa Churcher as Sarah Ben Fox as MI5 Officer Martin Cole as SAS Officer Rebecca Johnson as Civil Servant Rad Lazar as Gradic Henchman Graham Christopher as George