Williams, 66, who played the father of the Weasley family, said: “I love coming back to the wizarding world.”
Oliver Phelps, 40, who starred in the series alongside his twin brother James, added: “Being back on the set reunited with Bonnie and Mark has been absolutely superb – it’s like coming into a time warp, like no time has passed at all since we were last together.”
The reunion also celebrates the launch of the summer feature First Year At Hogwarts – Where The Filmmaking Magic Began at the studios, which gives fans the chance to relive moments from the film.
The exhibition will run at Warner Bros Studio Tour London – The Making of Harry Potter for four months from 7 May.
The feature will allow visitors to relive the famous moment where protagonist Harry experiences the Sorting Hat.
It will also showcase other beloved moments, including Hermione Granger, played by Emma Watson, casting the Petrificus Totalus spell on Neville Longbottom, played by Matthew Lewis, in the Gryffindor common room.
Geoff Spooner, senior vice president of WBD Global Experiences EMEA, said: “This summer, we’re celebrating 25 years since Harry Potter first began his journey at Hogwarts, a story that has enchanted generations, and our new summer feature invites fans right back into the very heart of that magic.
“Reuniting Bonnie, James, Oliver, and Mark to the original, authentic film sets for this milestone makes it all the more special, as they step back into those unforgettable moments and reminisce about the film that started it all.”
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