James Kent Director Olivia Colman Margaret Lea Actor Vanessa Redgrave Vida Winter Actor Emily Beecham Isabelle Angelfield Actor Antonia Clarke Emmeline March Actor Alexandra Roach Hester Barrow Actor Steven Mackintosh Dr. Clifton Actor Sophie Turner Adeline March Actor Tom Goodman-Hill Dr. Mawsley Actor Christopher Hampton Screenwriter Rosie Alison Executive Producer David Heyman Producer Norma Heyman Producer Benjamin Wallfisch Original Music Jean-Philippe Gossart Cinematographer Luke Dunkley Film Editing Gail Stevens Casting