Black Dog

Jamie Flatters

Nathan

Keenan Munn-Francis

Sam

Nicholas Pinnock

David

Ruby Stokes

Kayla

Paul Kaye

Andre

Amrita Acharia

Doctor

Hattie Morahan

Mel

Jason Flemyng

RSPCA Operator

Leanne Best

Dog Lady

Liv Hill

Scarlett (voice)

Kieyun Ffrench

Tyan

Byron Easmon

Seleso