Howard Overman Creator, Writer Karla Crome Jess Actor Joseph Gilgun Rudy Wade Actor Nathan McMullen Finn Samson Actor Natasha O'Keeffe Abbey Smith Actor Matt Stokoe Alex Actor Shaun Dooley Greg Actor Scarlett Brookes Leah Actor Chloe Pirrie Debbie 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 Lawrence Gough Director