Bryan Elsley Creator Jamie Brittain Creator Nicholas Hoult Actor Joe Dempsie Actor Mike Bailey Actor Hannah Murray Actor April Pearson Actor Larissa Wilson Actor Dev Patel Actor Mitch Hewer Actor Kaya Scodelario Actor Siwan Morris Actor Harry Enfield Guest Star Morwenna Banks Guest Star Georgina Moffat Actor Eleanor Lawrence Stacey Guest Star John Arthur Middle Aged Teacher Guest Star John Weldon Big Issue Seller Guest Star Juliet Howland Music Teacher Guest Star Stephen Walters Mad Twatter Guest Star Peter Capaldi Mark Jenkins (voice) Guest Star Lara De-Leuw Danuta Guest Star Louise Downie Miriam Guest Star S.J. Evans Gay Man Guest Star Paul Gay Director Charles Pattinson Executive Producer George Faber Executive Producer