Actors Jessie Cave and Oliver Phelps (Lavender Brown and George Weasley in the films) attended the screening, which took place in the Great Hall set at Leavesden.
The event was hosted by Sky Movies to celebrate all eight of the Harry Potter films being available on Sky’s set-top box, the TV On Demand service and Sky Go.
Sat on sofas and beanbags in the Great Hall, Harry Potter fans could choose which film they wanted to watch from the series on individual iPads.
They were served gourmet fish and chips, burgers and hotdogs, followed by popcorn as they watched the films. Catering was provided in-house.
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