Jamie Glover (Harry Potter), Thomas Aldridge (Ron Weasley), Nicola Alexis (u/s Hermione Granger), Lowri James (u/s Ginny Potter), Ed White (u/s Draco Malfoy), Theo Ancient (Albus Potter), Samuel Blenkin (Scorpius Malfoy), Helen Aluko (Rose Granger-Weasley/Young Hermione), Annabel Baldwin (Delphi Diggory), James Phoon (Craig Bowker Jr.), April Hughes (Moaning Myrtle/Lily Potter Sr.), Sarah Miele (Polly Chapman), David Annen (Uncle Dursley/Severus Snape/Lord Voldemort), Mark Theodore (Hagrid/Sorting Hat), Henry Rundle (Yann Fredericks), Elizabeth Hill (Aunt Petunia/Trolley Witch/Dolores Umbridge), Barry McCarthy (Amos Diggory/Albus Dumbledore), Morag Cross (u/s Minerva McGonagall), Jordan Paris (u/s Cedric Diggory/James Potter Jr./James Potter Sr.), Tom Mackley (Dudley Dursley/Karl Jenkins/Viktor Krum), Nuno Silva (Bane), Martin Johnston (Station Master)