Guest Stars Matthew Marsh as Percy Walsh Adam Ewan as Les Grant Estella Daniels as Elsie Watson Marion Bailey as Hilda Bruce-Potter Anna Burnett as Linda Travers Ray Emmet Brown as John Peckett Anthony Flanagan as Flavian Creech Ben Bishop as Norbert 'Nobby' Hobbs Martin Hutson as Lawrence Yeager Jennifer Kirby as Dr Gillian Nicholls Will Sebag-Montefiore as Professor Patrick Stanton Adam Mirsky as Richard Blake Chirag Lobo as Asif Faradoon
