Jamie Glover (Harry Potter), Thomas Aldridge (Ron Weasley), Nicola Alexis (u/s Hermione Granger), Emma Lowndes (Ginny Potter), James Howard (Draco Malfoy), Theo Ancient (Albus Severus Potter), Samuel Blenkin (Scorpius Malfoy), Rayxia Ojo (u/s Rose Granger-Weasley/Young Hermione), April Hughes (u/s Delphi Diggory), James Phoon (Craig Bowker Jr.), Sarah Miele (u/s Moaning Myrtle/Lily Potter Sr.), Leah Haile (u/s Polly Chapman), Ged Simmons (u/s Uncle Dursley/Severus Snape/Lord Voldemort), Mark Theodore (Hagrid/Sorting Hat), Jordan Paris (u/s Yann Fredericks), Elizabeth Hill (Aunt Petunia/Trolley Witch/Dolores Umbridge), Barry McCarthy (Amos Diggory/Albus Dumbledore), Morag Cross (u/s Professor McGonagall), Rupert Henderson (Cedric Diggory/James Potter Jr./James Potter Sr.), Tom Mackley (Dudley Dursley/Karl Jenkins/Viktor Krum), Nuno Silva (Bane), Martin Johnston (Station Master)