Sophie Kennedy Clark
— Annie
Simon Amstell
— Aaron
Cian Barry
— The Man
Cillian Murphy
— The Doll
Faith Edwards
— The Policewoman
Nathalie Hambro
Cordelia Levinson
— The Roommate
Emily Lloyd-Saini
— The Nanny
Ben Miller
— The Delivery Driver
Dan Ritchie
— The Roommate's Boyfriend / Angry Parent (voice)