Jamie Glover (Harry Potter), Thomas Aldridge (Ron Weasley), Rakie Ayola (Hermione Granger), Emma Lowndes (Ginny Potter), James Howard (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), Henry Rundle (Yann Fredericks), Elizabeth Hill (Aunt Petunia/Trolley Witch/Dolores Umbridge), Barry McCarthy (Amos Diggory/Albus Dumbledore), Sandy McDade (Minerva McGonagall), Rupert Henderson (Cedric Diggory/James Potter Jr./James Potter Sr.), Tom Mackley (Dudley Dursley/Karl Jenkins/Viktor Krum), Nuno Silva (Bane), Harrison Noble (Young Harry Potter), Esme Grace (Lily Potter Jr.), Martin Johnston (Station Master)