Horrid Henry
Theo Stevenson
Miss Battleaxe
Anjelica Huston
Soggy Sid
David Schneider
Prissy Polly
Kimberley Walsh
Weeping William
Billy Kennedy
Ed Banger
Noel Fielding
Demon Dinner Lady
Jo Brand
Rich Aunt Ruby
Helen Lederer
Miss Oddbod
Rebecca Front
Aerobic Al
Jack Sanders
Brainy Brian
Reuben Lee
Sour Susan
Helena Barlow
Perfect Peter
Ross Marron
Gorgeous Gurinda
Nikita Mistry
Spotless Sam
Frank Kauer
Goody Goody Gordon
Joshua-James Thomas
Stuck-Up Steve
Tyger Drew-Honey
Madam Tutu / Fang (voice)
Tamsin Heatley
2C4S Presenter 1
Dominic Wood
2C4S Presenter 2
Richard McCourt
Tidy Ted
Zac Gabriel Werb
Alice
Keely Cat Wells
Vicious Vicky
Kia Pegg
Miss Lovely
Parminder Nagra
Keepy Uppy Boy
Sam Davis
Schoolboy (uncredited)
Freddie Rose
Harvey Walsh
Dad
Mathew Horne
Mum
Siobhan Hayes
Vic Van Wrinkle
Richard E. Grant
Great Aunt Greta
Prunella Scales
Moody Margaret
Scarlett Stitt
Rude Ralph
Lloyd Howells
Casting
Suzanne Smith
Producer
Rupert Preston
Executive Producer
Allan Niblo
Director
Nick Moore
Associate Producer
Keri Atkins
Paul Brett
James Richardson
Original Music Composer
Lester Barnes
Michael Price
Writer
Tony Ross
Mike Watts
Nigel Williams
Tim Smith
Co-Producer
Caroline Levy
James Swarbrick
Line Producer
Claire Barry
Production Supervisor
Huberta von Liel
Art Direction
Astrid Sieben
Costume Supervisor
Sunny Rowley
Set Decoration
Kate Guyan
Lucinda Whiteley
Screenplay
Special Effects Supervisor
Steve Lucas
Production Design
Richard Bullock
Director of Photography
Sam McCurdy
3D Supervisor
Niels Rinke
Characters
Francesca Simon
Editor
Simon Cozens
Costume Design
Colleen Kelsall
Assistant Costume Designer
Sophia Spink
Gary Davy
Script Supervisor
Carole Salisbury
Makeup Artist
Angie Mudge
Jemma Carballo
Special Effects Makeup Artist
Adrian Rigby