Finn Cole
Don Wallace
Asa Butterfield
Willoughby Blake
Hermione Corfield
Clemsie Lawrence
Simon Pegg
Meredith Houseman
Michael Sheen
The Bat
Nick Frost
Woody Chapman
Tom Rhys Harries
Clegg
Isabella Laughland
Kay
Kit Connor
Wootton
Jamie Blackley
Caspar de Brunose
Margot Robbie
Audrey
Jo Hartley
Babs Wallace
Jane Stanness
Matron
Louis Strong
Smudger
Jassa Ahluwalia
Yuri
Cory Chambers
Bello
Alan Drake
Butler
Charles Evans
Mikey
Charlie Fitzherbert
Tomkinson
Alhaji Fofana
Chibwe
Hanako Footman
Poppet
Gary Golding
Hedger
Rohan Gotobed
Scholar Bartlett
Nick Kellington
The Beast
Alex Macqueen
Lambert
Levi Masoet
Dr. François
Neil Pendleton
Red Dreads
Max Raphael
Hargreaves
James Woodroffe
Teddy Chapman
Joshua Squire
Olympus Boy (uncredited)
Toby Cordes
Sparta Boy (uncredited)
Ted Day
Sparta Boy (uncredited)
Thomas Farrow-Tomson
Sparta Boy (uncredited)
Harry Isherwood
Sparta Boy (uncredited)
Aron Jackson
Sparta Boy (uncredited)
Mateusz Kobylec
Sparta Boy (uncredited)
Sam Redland
Sparta Boy (uncredited)
Zaak Conway
Tiny New Boy (uncredited)
Jack Webb
Xenephon Boy (uncredited)
Ben Wheeler
Xenephon Boy (uncredited)
Lee Charles
Special Security (uncredited)
Lucy Appleton
Andromeda Girl / Kissing Couple (uncredited)