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