Prince Harry and Meghan intend to relocate from the US later this month to a private, non-royal residence outside London as first reported by the Daily Telegraph and the Sun.
The couple's children, Prince Archie, seven, and Princess Lilibet, five, are enrolled to start at a British school in September.
King Charles was told of the move on Sunday. There are no current plans for either Prince Harry or Meghan to resume their roles as working Royals.
The Sussexes and their children visited the King at his Highgrove home in July this year, but it is understood the move was not discussed.
The BBC understands the King was unaware of the move before last weekend but he welcomes the opportunity to see more of the Sussex family in a private and personal capacity.
No change is expected to the official status of Prince Harry and Meghan and they will remain as private individuals.
The Prince and Princess of Wales have also been informed of their plans.
