Ewan McGregor

Character: Christopher Robin

Hayley Atwell

Character: Evelyn Robin

Bronte Carmichael

Character: Madeline Robin

Jim Cummings

Character: Winnie the Pooh / Tigger (voice)

Brad Garrett

Character: Eeyore (voice)

Nick Mohammed

Character: Piglet (voice)

Toby Jones

Character: Owl (voice)

Peter Capaldi

Character: Rabbit (voice)

Sophie Okonedo

Character: Kanga (voice)

Sara Sheen

Character: Roo (voice)

Mark Gatiss

Character: Giles Winslow

Ronkẹ Adékoluẹjo

Character: Katherine Dane

Adrian Scarborough

Character: Hal Gallsworthy

Roger Ashton-Griffiths

Character: Ralph Butterworth

Ken Nwosu

Character: Paul Hastings

John Dagleish

Character: Matthew Leadbetter

Amanda Lawrence

Character: Joan MacMillan

Tristan Sturrock

Character: Alan Alexander Milne

Katy Carmichael

Character: Daphne de Sélincourt

Paul Chahidi

Character: Cecil Hungerford

Orton O'Brien

Character: Christopher Robin (Young)

Elsa Minell Solak

Character: Madeline Robin (Kid)

Amrou Al-Kadhi

Character: Nemir Azizi

Vera Chok

Character: Margaret King

Raj Ghatak

Character: Neel Chawla

Oliver Ford Davies

Character: Old Man Winslow

Vivien Bridson

Character: Old Man Winslow's Secretary

Matt Berry

Character: Policeman Bobby

Jasmine-Simone Charles

Character: Little Girl

Harriet Leitch

Character: Tea Server

Souad Faress

Character: Wealthy Woman

Claire Redcliffe

Character: Boarding School Teacher

Matt Gavan

Character: Snooty Businessman

Mackenzie Crook

Character: Newspaper Seller

Clara McGregor

Character: Girl in Aircraft Design Office

Gareth Mason

Character: Balloon Vendor

Summer Brooks

Character: Balloon Holder

Zain Falzon

Character: Boy in Stroller

Rainy Milo

Character: Boy's Mother

Simon Farnaby

Character: Taxi Driver

Matthew Earley

Character: Truck Driver

Narinder Samra

Character: Milkman

Oliver Payne

Character: Milk Delivery Boy

Kumud Pant

Character: Train Passenger

Michael Jenn

Character: London Train Conductor

Alan Clark

Character: Sussex Train Attendant

Chris Pratt

Character: Sussex Train Porter

Shola Adewusi

Character: Rosemary Hopwood

Tim Ingall

Character: Jimmy Knowait

Peter Singh

Character: Ravi Patel

Connor Haywood

Character: Lance Corporal

Jackson Kai

Character: Cricketer

Richard M. Sherman

Character: Singer

Olga Docheva

Character: Book Store Customer

David Evestaff

Character: WWII Soldier

Stuart Cooke

Character: Billboard Worker

Mary Yeomans

Character: Tradesman

A.k. Steppa

Character: Platform Shop Vendor

Matt Harvey

Character: Head Boy

Ethan Keaton

Character: Homeless Man

Thomas Padden

Character: Businessman

Roy Beck

Character: Winslow Board Director

Caroline Garnell

Character: Winslow Efficiency Room Worker

Richard Price

Character: Winslow Office Worker

Chloe Swan Sparwath

Character: Winslow Junior Office Worker

Rupert Turnbull

Character: Red-Haired Boy

Kai Scarlett Williams

Character: Market Boy

Evie Wray

Character: Market Boy's Mother

Lee Asquith-Coe

Character: School Porter

Nick Davison

Character: Station Porter

Rutvig Vaid

Character: Station Porter

Niamh O'Mahony

Character: Woman on Bus

Gino Picciano

Character: Man on the Bus

David Hartley

Character: Man on the Bus

Errol Francis

Character: Railway Passenger

Bern Collaço

Character: Train Passenger

Dean Middhat

Character: Train Passenger

Marco Mastrocola

Character: Train Passenger

Gary Thompsett

Character: Train Passenger

Jeremy Oliver

Character: Commuter

Sharron Spice

Character: Commuter

Anthony Richard Rowe

Character: Home Guard

Mark Sayers

Character: Home Guard

John Whitby

Character: Passerby

Karol Steele

Character: Passerby

Karen Smyth

Character: Passerby

Christopher Haley

Character: Passerby

Chloe-Megan Child

Character: Passerby

Gintare Beinoraviciute

Character: Passerby