Roger Mainwood Director, Screenwriter Camilla Deakin Director Ruth Fielding Director Brenda Blethyn Ethel Briggs Voice Jim Broadbent Ernest Briggs Voice Pam Ferris Mrs. Bennett Voice Luke Treadaway Raymond Briggs Voice Roger Allam Middle Aged Doctor Voice Peter Wight Detective Sergeant Burnley Voice Virginia McKenna Lady of the House Voice June Brown Ernest's Step Mother Voice Raymond Briggs Executive Producer Robert Little Executive Producer Adam Partridge Executive Producer Jon Rennie Executive Producer Carl Davis Original Music Richard Overall Film Editing