Tom Hiddleston

Character: Dr. Robert Laing

Elisabeth Moss

Character: Helen Wilder

Sienna Miller

Character: Charlotte Melville

Jeremy Irons

Character: Anthony Royal

Luke Evans

Character: Richard Wilder

Reece Shearsmith

Character: Nathan Steele

Dan Renton Skinner

Character: Simmons

James Purefoy

Character: Pangbourne

Peter Ferdinando

Character: Cosgrove

Stacy Martin

Character: Fay

Keeley Hawes

Character: Ann Royal

Sienna Guillory

Character: Jane Sheridan

Augustus Prew

Character: Munrow

Julia Deakin

Character: Jean

Tony Way

Character: Robert the Caretaker

Leila Mimmack

Character: Laura

Bill Paterson

Character: Mercer

Enzo Cilenti

Character: Talbot

Louis Suc

Character: Toby

Emilia Jones

Character: Vicky

Neil Maskell

Character: P.C. White

Alexandra Weaver

Character: Lucy

Victoria Wicks

Character: Miriam

Joseph Harmon

Character: George

Dylan Edwards

Character: Dominic

Toby Williams

Character: Bobby

Siobhán O'Kelly

Character: Suzie

Maggie Cronin

Character: Mrs. Munrow

Patrick Fitzsymons

Character: Mr. Munrow

Eileen Davies

Character: Mrs. Hillman

Kenneth Hadley

Character: Mr. Hillman

Patrick Buchanan

Character: Gym Instructor

Colin Ash

Character: Kid's Party Dad

Colin Carnegie

Character: Resident

Michael Condron

Character: Delivery Man

Richard Croxford

Character: Upper Floor Resident

Graham Duff

Character: Queue Person

Matt Faris

Character: Barricader

Karen Hassan

Character: Young Woman

Monique Kelly

Character: Wine Woman

Faolan Morgan

Character: Groping Man

Chris Patrick-Simpson

Character: Shopper

Sara Dee

Character: High-Rise (voice)

Fenella Woolgar

Character: Radio (voice)