Harry Potter returned to Hogwarts this weekend for a 20th anniversary special. He was joined in the Gryffindor common room by Hermione Granger and Ron Weasley, but not – controversially – the woman who created it all.

Harry Potter returned to Hogwarts this weekend for a 20th anniversary special. He was joined in the Gryffindor common room by Hermione Granger and Ron Weasley, but not – controversially – the woman who created it all.