Jared Harris
— John
Juliet Stevenson
— Mary
Erin Doherty
— Clare
Niamh Cusack
— Bella
Nicholas Pinnock
— DI Chambers
Aliona Baranova
— Magda
Danya Dixon
— Young Clare
Tomi May
— Carl
Michael Monroe
— Nathan
Larry Olubamiwo
— Steve
Noni Stapleton
— Noreen
Fiona Skinner
— Tessa
Morgan Watkins
— Adam
Barry Castagnola
— Police Officer