Tom Hiddleston
Dr. Robert Laing

Elisabeth Moss
Helen Wilder

Sienna Miller
Charlotte Melville

Jeremy Irons
Anthony Royal

Luke Evans
Richard Wilder

Reece Shearsmith
Nathan Steele

Dan Renton Skinner
Simmons

James Purefoy
Pangbourne

Peter Ferdinando
Cosgrove

Stacy Martin
Fay

Keeley Hawes
Ann Royal

Sienna Guillory
Jane Sheridan

Augustus Prew
Munrow

Julia Deakin
Jean

Tony Way
Robert the Caretaker

Leila Mimmack
Laura

Bill Paterson
Mercer

Enzo Cilenti
Talbot

Louis Suc
Toby

Emilia Jones
Vicky

Neil Maskell
P.C. White

Alexandra Weaver
Lucy

Victoria Wicks
Miriam

Dylan Edwards
Dominic

Toby Williams
Bobby

Siobhán O'Kelly
Suzie

Maggie Cronin
Mrs. Munrow

Patrick Fitzsymons
Mr. Munrow

Eileen Davies
Mrs. Hillman

Patrick Buchanan
Gym Instructor

Colin Carnegie
Resident

Michael Condron
Delivery Man

Graham Duff
Queue Person

Karen Hassan
Young Woman

Chris Patrick-Simpson
Shopper

Sara Dee
High-Rise (voice)

Fenella Woolgar
Radio (voice)