Top Billed Cast

1. 

   Sebastian Croft

   Archibald Arnold

2. 

   Charithra Chandran

   Amelia Brown

3. 

   Tanner Buchanan

   Billy Walsh

4. 

   Kunal Nayyar

   Rupert Brown

5. 

   Nick Frost

   William

6. 

   Guz Khan

   Mr. Atkins

7. 

   Lucy Punch

   Lilly Arnold

8. 

   Tim Downie

   George Arnold

9. 

   Daisy Jelley

   Amber McKenna

10. 

    Charles Camrose

    Tony

11. 

    Maisie Peters

    Maisie Peters

12. 

    Paxina Tuvuka

    Talissa

13. 

    Dhanushka Anson

    Jules Brown

14. 

    Nael Ameen

    Yousif

15. 

    Madeline Holliday

    Penny

16. 

    John Richmond

    Quigley

17. 

    Russell Streiner

    Johnny (archive footage)

18. 

    Judith O'Dea

    Barbra (archive footage)

19. 

    Bella Induruwana

    5 Years Old Amelia

20. 

    Henry Reinhart

    5 Years Old Archie

21. 

    Shaneli Gedara

    9 Years Old Amelia

22. 

    Casper Knopf

    9 Years Old Archie

23. 

    Aliyah Soyinka

    Student #1

24. 

    Curtis Antonio Powell

    Student #2(as Curtis Powell)

25. 

    Luyanda Unati Lewis-Nyawo

    Maggie

26. 

    Jocelyn Jee Esien

    Ms. Frances

27. 

    Jett Dyason

    Trent

28. 

    Ben Greenhough

    Soho Waiter

29. 

    Joyce Branagh

    Joyce Branagh

30. 

    Esther Agbakwuru

    Nurse(uncredited)

31. 

    William Cherry

    Student(uncredited)

32. 

    Nathan Hall

    George (Student with Fedora)(uncredited)

33. 

    Samuel Hayes

    Cinema Attendee(uncredited)

34. 

    George Imerlishvili

    Student(uncredited)

35. 

    Killian Kilduff

    Hot Dog Seller(uncredited)

36. 

    JJ Martin

    Student(uncredited)

37. 

    Freya Pearson

    Student(uncredited)

38. 

    Edith Slow-Noble

    Teenager(uncredited)

39. 

    Jack Smith

    Swim Team(uncredited)