The family are likely to be in situ, settling into their new abode, when the Sussexes pitch up although it is not yet known if plans for a private rendezvous have been made.
The Sussexes renewed their lease on Frogmore earlier this year, ensuring they would have a private place to stay when in the UK.
They came to a private agreement with Princess Eugenie and her husband, Jack Brooksbank, which allowed them to stay at the five-bedroom property, which underwent extensive renovations, when the couple moved to the US.
However, the couple and their one-year-old son, August, are understood to have moved out and now split their time between Ivy Cottage at Kensington Palace and Portugal, where Mr. Brooksbank works for the luxurious CostaTerra Golf and Ocean Club.
The Duke applied for a judicial review of his security arrangements shortly after a visit to the UK last summer, when he joined his brother to unveil a statue of their late mother, Diana, Princess of Wales, and he attended a WellChild charity event. During the visit, he felt his security was compromised.
He is challenging a decision made by the Executive Committee for the Protection of Royalty and Public Figures (known as Ravec) in February 2020, shortly after he announced he was stepping back as a working member of the Royal Family and moving abroad.
The decision recognizes that the Duke occupies a “particular and unusual position” and that he may need protective security in certain circumstances, which will be considered on a case by case basis.
The Duke has argued that he inherited the risk at birth and that as such, he, his wife and their children should be afforded permanent protective security in the UK, regardless of their status as non-working royals.
He has won the right to a judicial review based on an alleged lack of transparency about Ravec’s composition and processes. He has also applied for a second judicial review based on the decision not to allow him to pay for his Metropolitan Police protection privately.