Sebastian Croft

Archibald Arnold

Charithra Chandran

Amelia Brown

Tanner Buchanan

Billy Walsh

Kunal Nayyar

Rupert Brown

Nick Frost

William

Guz Khan

Mr. Atkins

Lucy Punch

Lilly Arnold

Tim Downie

George Arnold

Daisy Jelley

Amber McKenna

Charles Camrose

Tony

Maisie Peters

Maisie Peters

Paxina Tuvuka

Talissa

Dhanushka Anson

Jules Brown

Nael Ameen

Yousif

Madeline Holliday

Penny

John Richmond

Quigley

Russell Streiner

Johnny (archive footage)

Judith O'Dea

Barbra (archive footage)

Bella Induruwana

5 Years Old Amelia

Henry Reinhart

5 Years Old Archie

Shaneli Gedara

9 Years Old Amelia

Casper Knopf

9 Years Old Archie

Aliyah Soyinka

Student #1

Curtis Antonio Powell

Student #2(as Curtis Powell)

Luyanda Unati Lewis-Nyawo

Maggie

Jocelyn Jee Esien

Ms. Frances

Jett Dyason

Trent

Ben Greenhough

Soho Waiter

Joyce Branagh

Joyce Branagh

Esther Agbakwuru

Nurse(uncredited)

William Cherry

Student(uncredited)

Nathan Hall

George (Student with Fedora)(uncredited)

Samuel Hayes

Cinema Attendee(uncredited)

George Imerlishvili

Student(uncredited)

Killian Kilduff

Hot Dog Seller(uncredited)

JJ Martin

Student(uncredited)

Freya Pearson

Student(uncredited)

Edith Slow-Noble

Teenager(uncredited)

Jack Smith

Swim Team(uncredited)