Tuppence Middleton

~ as ~

Micky

Alexandra Roach

~ as ~

Do

Kerry Fox

~ as ~

Julia

Frances de la Tour

~ as ~

Aunt Elinor

Emilia Fox

~ as ~

Dr. Sylvie Wells

Aneurin Barnard

~ as ~

Jake

Stanley Weber

~ as ~

Serge

Alex Jennings

~ as ~

Chance

Maisie Lloyd

~ as ~

Young Do

Ciara Southwood

~ as ~

Young Micky