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)

Daniel Williams

Patrick, Age 5

Scarlet Billham

Denise, Age 7

Josh Herdman

Damon (as Joshua Herdman)

Mark Heenehan

Todd Banner

Devon Anderson

Dan

Jock Norton

Jake

Chris Stanton

Smooth Teacher

Keira Knightley

Music School Student

Del Synnott

Music Student

Vicki Pepperdine

Reporter

Adrian McLoughlin

Bob Rodgers

Ernesto Tomasini

Italian Concierge

Geoffrey McGivern

Metallurgist

Dick Ward

Prison Guard

Stephen Boswell

Prison Priest

John Arthur

Prison Governor

Glenn Wrage

Pilot

Paul Rogan

USSC Scientist

Gillian Maguire

Emmanuele

Alvin Chitroda

Taj

Pablo Duarte

Jose

Colin Stinton

Foster

John Hodgkinson

Launch Controller 1

Nigel Betts

Launch Controller 2

Rory MacGregor

Launch Controller 3