Prince William's appearance in a travel show was kept secret from its star Eugene Levy until the moment he appeared in front of the cameras.

The Canadian said he had "no idea that the guy taking me on a tour of Windsor Castle was the prince".

The Prince of Wales walked Levy through the castle, talking about its history and connection with the royal family, before joining him at the pub for a beer.

Watch the video above.

Prince William appears in season three of The Reluctant Traveller With Eugene Levy, on Apple TV+.

The episode, entitled Living The Royal Life In The UK, airs on October 3.

In a television appearance to promote the show, Levy spoke about his time with Prince William and described him as "an amazing guy to hang with".

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