Guest Stars Orla Bayne as Young Holly Mark Strepan as Rory Sawyer Emun Elliott as Alistair McDermid Sorcha Groundsell as Elizabeth Smith Evie Brassington as Young Georgia Chris Fulton as Charlie Lamont-Smith Jack Bannon as James Buxton Harris Dickinson as Sam Kåre Conradi as Lukas Steiner Peter Bankole as Mo Christy O'Donnell as Student Superhero 2 Darryl Dale as Student Superhero 3 Jamie Marie Leary as Student Superhero Craig McDougall as Guy Having Sex Lyndsey Craig as Girl Having Sex