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

Blythe Danner as Aurelia Plath

Michael Gambon as Professor Thomas

Alison Bruce as Elizabeth

David Tristan Birkin as Morecambe

Sonia Ritter as Midwife

Julian Firth as James Michie

Derek Payne as Vicar