Keira Knightley

Helen Webb

Ben Whishaw

Sam Young

Sarah Lancashire

Mrs. Reed

Martin Phipps

Voice on the Phone (voice)

Andrew Buchan

Wallace

Andrew Koji

Jason

Omari Douglas

Michael

Sam Troughton

Stephen Yarrick

Ella Lily Hyland

Williams

Isabella Wei

Kai-Ming

Adam Silver

Arnie

Nathan Stewart-Jarrett

Zack

Hannah Khalique-Brown

Maggie

Thomas Coombes

Phillip

Lizzie Hopley

Beth

Agnes O'Casey

Dani

Molly Chesworth

Marie

Ken Nwosu

Bill

Rat Scabies

Bingo

Antonia Campbell-Hughes

Georgina

Justine Mitchell

Emma

Eniko Fulop

Kent

Charlotte Rice-Foley

Jacqueline

Taylor Sullivan

Oliver

Philipp Christopher

Daniel

Robert Ashe

Santa Claus

Sally Scott

Political Correspondent

Andy Cheung

Ambassador Chen

Kathryn Hunter

Lenny

Gabrielle Creevy

Eleanor

Paapa Essiedu

Elmore Fitch

Julian Wadham

Andy

Luther Ford

Hector Newman

Ebony Francis-Peddie

Ruby

Will Joseph

Young Sam

Finn Bennett

Cole Atwood

Tai Yin Chan

Wu Lin

Dan Li

Chang Hao

Claudia Jolly

Ingrid

Steve Wall

Frank

Xiaonan Wang

Waitress

Billy Hickey

Young Hector Newman

Callum Coates

Thomas

Adeel Akhtar

Prime Minister Eaves

William Hope

Mitch Porter

Jennifer Armour

Vanessa

Brian Law

Aide

Brett Tutor

Security Guard

Lorna Lowe

Screaming Woman

Adam Best

Agent Perryman

Jayne Aguire

Erica

Sam Parks

James

Angus Cooper

Trent Clark

Thomas Chaanhing

Hang Chao

Timothy Harker

Les Mullery

Tim Faraday

Alex Clark's bodyguard

Tracey Ullman

Alex Clark