Naruhito, 64, will also go to Windsor Castle, west of London, to lay a wreath on the tomb of Queen Elizabeth, whose state funeral he and the empress, 60, attended in September 2022.
With Britain in the midst of a general election campaign, it was not immediately clear if there would be a meeting with Prime Minister Rishi Sunak.
Japanese ambassador to Britain Hajime Hayashi walks in front of Japan’s Emperor Naruhito and Empress Masako as they arrive at Stansted Airport on Saturday. Photo: Reuter