Hundreds of screaming Potter fans queued outside the studios in Leavesden, near Watford in Herts, where all the multimillion pound-grossing films based on JK Rowling's magical stories were shot.
Local boy Grint, who played Ron Weasley, said: "This is the most glamorous I've ever seen Watford."
More top news
Syrian refugee children have been making clothes for British shoppers, it has been claimed.
A judgement is due on Monday on a Christian bakery’s appeal against a ruling that found them guilty of discrimination against a gay man.
The crash happened at about 7.20am local time as the plane was heading for Misrata in Libya.