Martin Compston
— Ritchie
Talulah Riley
— Beth
Paul Brannigan
— Fraser
Joe Thomas
— Danny
Morgan Watkins
— Ethan
Harry Enfield
— Bill
Emun Elliott
— Leon
James Dreyfus
— Headmaster
Rachael Stirling
— Mrs. Pringle
Camille Coduri
— Aunt Nettie
Marianna Palka
— Fiona
Rufus Hound
— P.C. Dougie
Russell Kane
— St. Clair
Conor McCarron
— Zach
Steven O'Donnell
— Gavin
Niall Greig Fulton
— Murray