Ncuti Gatwa The Doctor Actor Millie Gibson Ruby Sunday Actor Jemma Redgrave Kate Lethbridge-Stewart Actor Sîan Phillips Enid Meadows Actor Michelle Greenidge Carla Sunday Actor Bonnie Langford Melanie Bush Actor Angela Wynter Cherry Sunday Actor Yasmin Finney Rose Noble Actor Paul Forman Lord Barton Actor Alexander Devrient Colonel Ibrahim Actor Lenny Rush Morris Gibbons Actor Genesis Lynea Harriet Actor Susan Twist Tea Lady Actor Anita Dobson Mrs Flood Actor Milo Callaghan Alan K Sullivan Actor David Charles Mr Price Actor Jasmine Bayes Corporal Sullivan Actor Aidan Cook The Vlinx Actor Nicholas Briggs The Vlinx Voice Johannes Radebe Self Russell T. Davies Executive Producer, Writer Kate Herron Writer Julie Gardner Executive Producer Briony Redman Writer Jane Tranter Executive Producer Joel Collins Executive Producer Phil Collinson Executive Producer Julie Anne Robinson Executive Producer, Director Steven Moffat Executive Producer, Writer Vicki Delow Producer Dylan Holmes Williams Director Jamie Donoughue Director Chris May Producer Ben Chessell Director