David Frankel Director James Corden Paul Potts Actor Alexandra Roach Julie-Ann Cooper Actor Julie Walters Yvonne Potts Actor Colm Meaney Roland Potts Actor Mackenzie Crook Braddon Actor Jemima Rooper Hydrangea Actor Valeria Bilello Alessandra Actor Alex Macqueen Dr. Thorpe Actor Justin Zackham Screenwriter Michael Menchel Producer Brad Weston Producer Kris Thykier Producer Simon Cowell Producer Bob Weinstein Executive Producer Harvey Weinstein Executive Producer Steve Whitney Executive Producer Florian Ballhaus Cinematographer Martin Childs Production Design Wendy Greene Bricmont Film Editing Daniel Hubbard Casting Colleen Kelsall Costume Design Theodore Shapiro Original Music Celia Bobak Set Decoration James Wakefield Art Director