Phoenix Laroche
William
Alex Lawther
Velveteen Rabbit (voice)
Саманта Колли
Mother
Leonard Buckley
Father
Tilly Vosburgh
Mary "Momo"
Helena Bonham Carter
Wise Horse (voice)
Lois Chimimba
Car (voice)
Paterson Joseph
King (voice)
Clive Rowe
Lion (voice)
Ellie Mejia
Miss Forrester
Conor Hamill
William's Friend
Paul Sparkes
Removal Man
Kiefer Moriarty
Adult at Party
Elizabeth O'Toole
Lucy
Jack Finn
Child
Declan Mills
George
Edward Baker-Duly
Doctor
Sean Duggan
Teacher
Nathaniel Parker
Male Rabbit (voice)
Bethany Antonia
Female Rabbit (voice)
Nicola Coughlan
Playroom Fairy (voice)