Whether or not the couple hold onto their HRH styles and Duke and Duchess of Sussexes titles will be decided by the Queen next year.
According to Mr Fitzwilliams, the couple’s success landing commercial deals with Spotify and Netflix in the USA means they are likely to remain Stateside for the foreseeable future.
He added: “It has become clear that, having relocated to Los Angeles, that they see their future in the US.
“They achieved financial independence with a substantial deal with Netflix and another with Spotify for podcasts. “