Domhnall Gleeson as Dr. Faraday

Ruth Wilson as Caroline Ayres

Will Poulter as Roderick Ayres

Oliver Zetterström as Young Faraday

Charlotte Rampling as Mrs. Ayres

Liv Hill as Betty

Harry Hadden-Paton as Dr. Granger

Anna Madeley as Anne Granger

Clive Francis as Mr. Rossiter

Elizabeth Counsell as Mrs. Rossiter

Sarah Crowden as Miss Dabney

Kate Phillips as Diana Baker-Hyde

Nicholas Burns as Peter Baker-Hyde

Dixie Egerickx as Gillian Baker-Hyde

Oliver Chris as Tony Morley

Richard McCabe as Dr. Seeley

Lorne MacFadyen as Dr. Calder

Josh Dylan as Bland

Shaughan Seymour as Hewitt

Alison Pargeter as Maid

Tipper Seifert-Cleveland as Susan Ayres

Kathryn O'Reilly as Elizabeth Faraday

Eddie Toll as Faraday's Father

Camilla Arfwedson as Young Mrs Ayres

Darren Kent as Young Male Patient

Peter Ormond as Colonel Ayres

Maggie McCarthy as Mrs. Ravensdale

Amy Marston as Mrs. Blundell

Archie Bradfield as Alan Blundell

Lloyd Hutchinson as Babb

Ann Firbank as Aunt Cissie

Angus Wright as Coroner Riddell

Alice Bailey Johnson as Brenda

Martin Carroll as Dr. Warren

Angela Sims as Dress Shop Assistant

Richard Campbell as Photographer

Charlie Anson as Bespectacled Man

Grant Crookes as Pallbearer (uncredited)