Emperor Naruhito and Empress Masako arrived in Britain on Saturday for a three-day state visit hosted by King Charles III.
A special flight from Japan landed at London's Stansted airport. The royal couple are to spend Sunday and Monday at private engagements before the official program begins on Tuesday.
The highlight will be a state banquet at Buckingham Palace, with all eyes on a possible appearance by heir to the throne Prince William's wife Catherine, rarely seen in recent months due to cancer treatment.
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