Andrew O'Connor Creator, Executive Producer Jesse Armstrong Creator, Writer, Executive Producer Sam Bain Creator, Writer, Executive Producer David Mitchell Mark Corrigan Actor Robert Webb Jeremy Usborne Actor Olivia Colman Sophie Chapman Actor Neil Fitzmaurice Jeff Heaney Actor Matt King Super Hans Actor Paterson Joseph Alan Johnson Actor Angus Little Guest Star Catherine Shepherd April Danecroft Guest Star Elizabeth Marmur Toni Actor Jordan Long Guest Star Peter Capaldi Professor Alistair MacLeish Guest Star Rachel Blanchard Nancy Actor Tony Wadham Pete Preston Guest Star Harmage Singh Kalirai Mr. Rashid Guest Star Trevor Laird Laurie Guest Star John Hodgkinson Tony Guest Star Terry Bird Terry Guest Star Tadeusz Pasternak Nim Guest Star Gareth Tunley Gog Guest Star Tim Steed Guest Star Tristram Shapeero Director