On April 26, 2013, Their Royal Highnesses The Duke and Duchess of Cambridge accompanied by His Royal Highness Prince Harry of Wales will attend the opening of Warner Bros. Studios in Leavesden.

Per a press release:

“During the first part of the studio tour, The Duke and Duchess and Prince Harry will meet some of the creative teams from recent Warner Bros. Productions. They will be given an insight into the film making process and shown some of the props and costumes from those films. The Duke and Duchess and Prince Harry will then attend the official inauguration of Warner Bros. Studios Leavesden, during which The Duke of Cambridge will deliver a short speech.

Following the inauguration, Their Royal Highnesses will undertake a tour of Warner Bros. Studio Tour London – The Making of Harry Potter, based on the same site, where they will view props, costumes and models from the Harry Potter film series. The tour will include: a visit to the Great Hall; a wand lesson in The Gryffindor Common Room; and a special effects demonstration on Diagon Alley. 

The visit will conclude with The Duke and Duchess of Cambridge and Prince Harry hosting a meeting for their Charities Forum in the Great Hall.”