- Conor Hamill - William's Friend
- Paul Sparkes - Removal Man
- 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)
- Jonathan Quinlan
-
Tom Bidwell
- Anna Rackard
- Karen Lindsay-Stewart
- Emily Jacobs
- Anne Dudley
- Pete Gates
- Franziska Treutler
- Adrian Rhodes
Capítulo disponible en las siguientes plataformas: