Howard Overman Creator, Writer Karla Crome Jess Actor Joseph Gilgun Rudy Wade Actor Nathan McMullen Finn Actor Natasha O'Keeffe Abbey Smith Actor Matt Stokoe Alex Actor Shaun Dooley Greg Actor Alex Austin Richard Saunders Actor Ellie Turner Katie Actor Iwan Rheon Simon Actor Lauren Socha Kelly Actor Nathan Stewart-Jarrett Curtis Actor Antonia Thomas Alisha Actor Matthew McNulty Seth Actor Petra Fried Executive Producer Murray Ferguson Executive Producer Kate Crowe Producer Jon Brown Writer Jonathan Van Tulleken Director