Tony Hagger Director, Screenwriter, Producer Asa Butterfield Adrian Healey Actor Rupert Everett Humphrey Biffen Actor Jeff Goldblum Donald Trefusis Actor Charles Dance Tickford Actor Tom Wilkinson Trefusis Actor Sally Phillips Beryl Actor David Walliams Hesketh-Hervey Actor Miles Jupp Dr. Meddlar Actor Ethan Lawrence Trotter Actor Elizabeth Healey Lady Helen Biffen Actor Jeff Stewart Gyp Actor Guy de Beaujeu Producer Stephen Fry Executive Producer Gavin James Executive Producer Gary Shaw Cinematographer Jessie Frost Casting Jina Jay Casting Eve Stewart Production Design