Neil Dudgeon
Bill Milner
Jessica Hynes
Anna Wing
Will Poulter
Tallulah Evans
Emilie Chesnais
Paul Ritter
Finola McMahon
Rachel Mureatroyd
Neil Dudgeon as Brother Joshua
Bill Milner as Will Proudfoot
Jessica Hynes as Mary Proudfoot (as Jessica Stevenson)
Anna Wing as Grandma
Will Poulter as Lee Carter
Tallulah Evans as Jess Proudfoot
Emilie Chesnais as French Teacher
Paul Ritter as Geography Teacher
Finola McMahon as Gail Graham
Rachel Mureatroyd as Marie Plante
Taylor Richardson as David Smart
Peter Robinson as Lucas Dupont
Charlie Thrift as Duncan Miller
Jules Sitruk as Didier Revol
Sam Kubrick-Finney as Danny