Director Paul King and producer David Heyman also were on hand, along with some celebrity guests.
Grant plays a scene-stealing Oompa-Loompa named Lofty.
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King told Deadline about plans for future films.

Timothée Chalamet at the ‘Wonka’ world premiere in LondonGetty Images
Theres a few irons in fires, he said.
More offshore markets added the following week, and it gets to North American theaters on December 15.
Wonkaarrived on three-week-outtrackinglast week with a revised industry projection of a $35M-$40M domestic opening.
