Jamie Ballard (Harry Potter), Thomas Aldridge (Ron Weasley), Franc Ashman (Hermione Granger), Susie Trayling (Ginny Potter), James Howard (Draco Malfoy), Joe Idris-Roberts (Albus Potter), Jonathan Case (Scorpius Malfoy), Helen Aluko (Rose Granger-Weasley/Young Hermione), Eve Ponsonby (Delphi Diggory), James Phoon (Craig Bowker Jr.), April Hughes (Moaning Myrtle/Lily Potter Sr.), Sinead Sharkey (Polly Chapman), David Annen (Uncle Dursley/Severus Snape/Lord Voldemort), Mark Theodore (Hagrid/Sorting Hat), Jordan Bamford (Yann Fredericks), Annette McLaughlin (Aunt Petunia/Trolley Witch/Dolores Umbridge), Barry McCarthy (Amos Diggory/Albus Dumbledore), Emma Bown (u/s Minerva McGonagall), Dylan Mason (Cedric Diggory/James Potter Jr./James Potter Sr.), Joshua Wyatt (u/s Dudley Dursley/Karl Jenkins/Viktor Krum), Adrian Christopher (Bane), Tom Hibberd (Young Harry Potter), Winnie Coombes (Lily Potter Jr.), Martin Johnston (Station Master)