Madison Ingoldsby

Young Kate

Emma Thompson

Petra

Boris Isakovic

Ivan

Lucy Miller

Young Marta

Emilia Clarke

Kate

Maxim Baldry

Ed

Margaret Clunie

Shower Sarah

John-Luke Roberts

Klaus the German Clown

Michelle Yeoh

Santa

Bilal Zafar

Oscar

Patti LuPone

Joyce

Lydia Leonard

Marta

Henry Golding

Tom

Michael Addo

Fit Looking Guy

Peter Mygind

The Dane aka 'Boy'

Rob Delaney

Theater Director

Peter Serafinowicz

Theater Producer

Sara Powell

Casting Director