Back To Hogwarts 2024 Cast. With gary oldman, emma watson, john hurt, daniel radcliffe.  — the main cast of the most beloved wizarding franchise gathered for a reunion special celebrating the 20th anniversary of harry potter, but what have they done since?

 — emma watson, daniel radcliffe and rupert grint were the main stars throughout the film franchise. Daniel radcliffe, rupert grint and emma watson join filmmaker chris columbus and other esteemed cast members across all eight harry potter films as they travel back to hogwarts for.