Domhnall Gleeson

Alan Alexander Milne / Blue

Margot Robbie

Daphne Milne

Will Tilston

Christopher Robin Milne / Billy Moon

Stanley Hamlin

Christopher Robin Milne (Baby)

Dexter Hyman

Christopher Robin Milne (Kid)

Sonny Hyman

Christopher Robin Milne (Kid)

Alex Lawther

Christopher Robin Milne (Teen)

Kelly Macdonald

Olive Rand / Nou

Phoebe Waller-Bridge

Mary Brown

Vicki Pepperdine

Betty

Stephen Campbell Moore

Ernest H. Shepard

Richard McCabe

Rupert

Geraldine Somerville

Lady O

Nico Mirallegro

Cooper

Shaun Dingwall

Alfred Brockwell