Jim Broadbent as Ernest Briggs (voice)

Brenda Blethyn as Ethel Briggs (voice)

Luke Treadaway as Raymond Briggs (voice)

Roger Allam as Middle Aged Doctor (voice)

Virginia McKenna as Lady of the House (voice)

Peter Wight as Detective Sergeant Burnley (voice)

Pam Ferris as Mrs Bennett / Aunty Betty (voice)

Simon Day as Alf (voice)

Raymond Briggs as Raymond Briggs (voice)

June Brown as Ernest's Step Mother (voice)

Harry Collett as Young Raymond (voice)

Gillian Hanna as Midwife / Aunty Flo (voice)

Alex Jordan as Best Man / Fireman / Train Guard / Doctor (voice)

Duncan Wisbey as Wedding Photographer / Radio Announcer / BBC Newsreader / Newspaper Seller / Tailor / Arthur (voice)

Macready Massey as Teenage Raymond (voice)

Karyn Claydon as Jean (Raymond's wife) (voice)