Gwyneth Paltrow

as Sylvia Plath

Daniel Craig

as Ted Hughes

Jared Harris

as Al Alvarez

Amira Casar

as Assia Wevill

Andrew Havill

as David Wevill

Sam Troughton

as Tom Hadley-Clarke

Lucy Davenport

as Doreen

Anthony Strachan

as Michael Boddy