Marc Munden Director Colin Firth Lord Archibald Craven Actor Julie Walters Mrs. Medlock Actor Dixie Egerickx Mary Lennox Actor Maeve Dermody Alice Actor Amir Wilson Dickon Actor Jemma Powell Grace Craven Actor Anne Lacey Mrs. Pitcher Actor Edan Hayhurst Colin Craven Actor Sonia Goswami Aayah Actor Jack Thorne Screenwriter David Heyman Producer Rosie Alison Producer Ron Halpern Executive Producer Didier Lupfer Executive Producer Dan MacRae Executive Producer Robert Simonds Executive Producer Lol Crawley Cinematographer Luke Dunkley Film Editing Dario Marianelli Original Music Grant Montgomery Production Design Pilar Foy Art Director Michele Clapton Costume Design Karen Lindsay-Stewart Casting