King Charles III has revised the original plan for President Donald Trump’s upcoming U.K. visit. Details confirmed by Buckingham Palace show a shift from a casual summer meeting in Scotland to a formal state visit this September — complete with traditional pomp, ceremony, and a state banquet at Windsor Castle.

An official letter, known as a “manu regia”, was personally signed by the King and delivered to the White House, marking the formal invitation. Initially, Charles had proposed a more low-key encounter at Balmoral or Dumfries House, but schedule conflicts led to the cancellation of that option.

Prime Minister Keir Starmer reportedly urged for a full ceremonial state visit this autumn, in a move seen as aligning more closely with Trump’s preferences and the weight of diplomatic protocol — despite royal desires for a more measured approach .

The visit will be the first second state visit a U.S. president has received in modern royal history. Guests are expected to tour Windsor Castle, participate in a carriage procession, and attend a grand state banquet with King Charles, Queen Camilla, Prince William, and Kate Middleton in attendance.