Ncuti Gatwa The Doctor Actor Varada Sethu Belinda Chandra Actor Jonny Green Alan Budd Actor Max Parker Manny Actor Anita Dobson Mrs Flood Actor Jeffin Kunjumon Stefan Haines Actor Belinda Owusu Receptionist Actor Thomas Storey Tombo Actor Stephen Love Robot 1 Actor Robert Strange Robot 2 Actor Nicholas Briggs Voice of the Robots Actor Evelyn Miller Sasha 55 Actor Lucas Edwards Robot 4 Actor Nadine Higgin Shago Actor William Ellis Prime Minister Actor Thalia Dudek Kirby Blake Actor Charles Sandford Robot 3 Actor Caleb Hughes Scoley Actor Russell T. Davies Writer, Executive Producer Jane Tranter Executive Producer Phil Collinson Executive Producer Julie Gardner Executive Producer Joel Collins Executive Producer Vicki Delow Producer Peter Hoar Director