Thunderpants

Simon Callow

Sir John Osgood

Stephen Fry

Sir Anthony Silk

Celia Imrie

Miss Rapier

Paul Giamatti

Johnson J. Johnson

Ned Beatty

Gen. Ed Sheppard

Bruce Cook

Patrick Smash

Rupert Grint

Alan A. Allen

Bronagh Gallagher

Mrs. Smash

Victor McGuire

Mr. Smash

Adam Godley

Placido P. Placeedo

Leslie Phillips

Judge

Robert Hardy

Doctor

Anna Popplewell

Denise Smash

Josh Herdman

Damon

John Higgins

Paediatrician

Samuel Morgan-Davies

Patrick, Age 3 (as Sam Davies)