Harry Potter 20th anniversary: How to watch the reunion special and what to expect

In the new year, we're going back to Hogwarts 20 years after first seeing the famous wizarding school on screen

Rupert Grint, Emma Watson and Daniel Radcliffe at the world premiere of Harry Potter And The Deathly Hallows: Part 2 in 2011.

Why is there a special Harry Potter show and when is it on television?

Believe it or not, our favourite boy wizard is celebrating 20 years since his big screen debut. Harry Potter and the Philosopher’s Stone premiered in 2001 and its stars are reuniting for an anniversary special.