Gemma Arterton

as Barbara Parker / Sophie Straw

Arsher Ali

as Dennis Mahindra

Matthew Beard

as Bill Gardiner

Leo Bill

as Tony Holmes

Rosie Cavaliero

as Aunt Marie Parker

Alexa Davies

as Marjorie Harrison

David Threlfall

as George Parker

Clare-Hope Ashitey

as Diane Lewis

Alistair Petrie

as Ted Sargent

Tom Bateman

as Clive Richardson