Prince George, Princess Charlotte and Louis's 'after hours' at Windsor Castle

Prince George, Princess Charlotte and Prince Louis reportedly enjoy spending time at Windsor Castle "after hours" with their dad Prince William. William spoke about his children to Eugene Levy on his Apple TV+ show, The Reluctant Traveler.

The 43-year-old shared that he enjoys recreating his own childhood memories with George, 12, Charlotte, 10, and Louis, 7. Meeting at Windor Castle, William gave Eugene a grand tour of the historic residence, with the royal referring to St George's Hall as one of his "favourite parts". Speaking of his own childhood, William said he remembers chasing his cousins around St George's Hall - something that came with a risk.

Speaking to Eugene, William said: "My cousins and I and the family, would chase each other up and down here and play silly games.

"And I remember these carpets weren't here, and there are a couple of spots where you used to have to watch out because you'd get massive splinters because the floor is old wood."

Discussing the "really dark, wooden oak floor", he added: "When you went running off, you'd end up coming away with an enormous splinter. Everyone would say 'stop, stop' and someone would have an enormous splinter in their foot."

Explaining that "now it's a lot easier", saying, "My children don't realise how lucky they are. They've got a big old carpet. They can run down and there's no splinters."

Revealing that he upholds the tradition with George, Charlotte and Louis, William added that they "come in after hours" and "chase each other around sometimes".

The revelation comes just days after it emerged that the royaol children were taken by their parents on a private visit to the set of HBO's new Harry Potter TV series near their home in Windsor.

An on-set source told the Daily Mail: "There was only one night of filming there, so it was a magical ticket."