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."
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Arguably the most striking of the IFS's conclusions is that over the last six years the wealthiest 10% have suffered the largest pay cuts.
It's still pretty wintry out there although the air over the next 12 or so hours will be fractionally less cold than it has been recently.