Maxine Peake
as Martha Costello
Rupert Penry-Jones
as Clive Reader
Neil Stuke
as Billy Lamb
John Macmillan
as John Bright
Theo Barklem-Biggs
as Jake Milner
Alex Jennings
as Alan Cowdrey
Amy Wren
as Bethany Brassington
Frances Barber
as Caroline Warwick
Phil Davis
as Micky Joy
Natalie Dormer
as Niamh Cranitch
Jessica Henwick
as Amy Lang
Indira Varma
as George Duggan
Miranda Raison
as Harriet Hammond
Tom Hughes
as Nick Slade