Michael Sheen

Character: Mark Furness

Shirley Henderson

Character: Charlotte

Adrian Bower

Character: Nathan

Claudie Blakley

Character: Kathy

Anastasia Griffith

Character: Stevie

Anton Lesser

Character: Charles

Elliot Cowan

Character: Gareth

Rupert Young

Character: Josh

Bhasker Patel

Character: Hasim

Kika Markham

Character: Geraldine

Mercedes Grower

Character: Gemma

John O'Mahony

Character: Dr. Dunphy