All Cast

Maggie Smith

Maggie Smith

Mary Gilbert

Ruth Wilson

Ruth Wilson

Young Mary

David Walliams

David Walliams

Greville White

Gemma Arterton

Gemma Arterton

Liza

Michael Byers

Michael Byers

Zach

Danny Lee Wynter

Danny Lee Wynter

Joe

Max Dowler

Max Dowler

Mr. Graham

Rebecca Bottone

Rebecca Bottone

Singer