Adam Gillen

as Gavin Allison

Iain Glen

as Paul Miller

Pippa Haywood

as Harriet Allison

Polly Walker

as Francesca Miller

Emma Rigby

as Gemma Roscoe

Jonas Armstrong

as Steve Roscoe

Natalie Gavin

as Lou Bell

Reuben Johnson

as Sean Lowe

Karla Crome

as Aisling O'Connor

Sally Carman

as Kim Haines