Emilia Clarke as Kate Andrich

Henry Golding as Tom Webster

Michelle Yeoh as Santa

Emma Thompson as Petra Andrich

Lydia Leonard as Marta Andrich

Boris Isaković as Ivan Andrich

Rebecca Root as Dr. Addis

Ingrid Oliver as Police Woman Crowley

Laura Evelyn as Police Woman Churchill

Patti LuPone as Joyce

Calvin Demba as Nathan

Ritu Arya as Jenna

Ansu Kabia as Rufus

Jade Anouka as Alba

Rob Delaney as Theatre Director

Peter Serafinowicz as Theatre Producer

Sara Powell as Casting Director

Peter Mygind as The Dane (aka ‘Boy’)

Amit Shah as Andy

Maxim Baldry as Ed

Margaret Clunie as Sarah

Sue Perkins as Ice Show Director

John-Luke Roberts as Klaus the German Clown

Madison Ingoldsby as Young Kate

Lucy Miller as Young Marta

Bilal Zafar as Oscar

Ben Owen-Jones as Danny

David Hargreaves as Arthur

Joe Blakemore as Tom

Anna Calder-Marshall as Dora

Leon Delroy Williams as Traffic Cone Man

Jassie Mortimer as Croatian Woman

Michael Matovski as Croatian Man

Jake Lampert as Angry Man on Bus

Liran Nathan as Moroccan Vendor

Laila Alj as Moroccan Vendor's Wife

David Mumeni as Guy in Pub

Andrew Ridgeley as Man in Audience at Homeless Shelter Benefit (uncredited)

Jacqueline Ramnarine as Homeless Person (uncredited)

Nichola Jean Mazur as Nurse Jane (uncredited)

Fabien Frankel as Fabien

Rene Costa as Geoff Mafia Boss (uncredited)