Jamie Glover (Harry Potter), Thomas Aldridge (Ron Weasley), Nicola Alexis (Hermione Granger), Emma Lowndes (Ginny Potter), James Howard (Draco Malfoy), Theo Ancient (Albus 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 Minerva 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)