Tom Courtenay
Grandpa
Tom Courtenay
Grandpa
Kit Connor
Jack
Jennifer Saunders
Miss Dandy
David Walliams
Barry
Samantha Spiro
Patricia
Alice Nokes
Shelley
Frankie Fox
Dazza
Michele Dotrice
Miss Trifle
Katy Brand
Miss Verity
Harish Patel
Raj
Ralph Riach
Mr. Willkins
Rafe Spall
Adult Jack (voice)
Kevin Cecil
Adaptation
David Walliams
Writer
Elliot Hegarty
Director
David Walliams
Original Story
Chris Lyons
Special Effects Makeup Artist
Conor Mackenzie
Lighting Technician
Francesca Falchi-Pereira
Production Coordinator
Amy Swan
Assistant Editor
Matt Biffa
Music Supervisor
Peter Oliver
Editor
Richard Mott
Director of Photography
Suzanne Field
Art Direction
Jacqui Mallett
Makeup Department Head
Julie Dorrat-Keenan
Makeup Supervisor
Tim Zaccheo
Visual Effects Supervisor
Alan Maxwell
Camera Operator
Lucy Enfield
Script Supervisor
Cathy Prior
Costume Supervisor
Iain McDonald
Production Design
Jacqui Mallett
Makeup Designer
Gwilym Perry
Foley Editor
Martin Newstead
Steadicam Operator
Dave Thom
Gaffer
Chris Pollard
Stunts
Karie-Ann Robinson
Chaperone
Andy Merchant
Stunts