Keira Knightley as Nell

Matthew Goode as Simon

Roman Griffin Davis as Art

Annabelle Wallis as Sandra

Lily-Rose Depp as Sophie

Lucy Punch as Bella

Ṣọpẹ́ Dìrísù as James

Kirby Howell-Baptiste as Alex

Rufus Jones as Tony

Davida McKenzie as Kitty

Hardy Griffin Davis as Hardy

Gilby Griffin Davis as Thomas

Trudie Styler as Nicole

Holly Aird as Susie

Dora Davis as Dani

Simon Prince as Father in Car

Kate Prince as Mother in Car

Rosamund McManus as Child 1 in Car

Amy McManus as Child 2 in Car