Emperor Naruhito and Empress Masako are making preparations to visit Britain as state guests in late June, the Imperial Household Agency said Saturday.
It will be the first trip to Britain by the imperial couple since they attended the funeral of Queen Elizabeth II in 2022.
The upcoming visit will be the second full overseas visit by the couple since the Emperor's accession to the throne in 2019, after their trip to Indonesia last year.
The emperor and the empress were slated to visit Britain in 2020 at the invitation of Queen Elizabeth II, but that was postponed amid the COVID-19 pandemic.
Earlier this year, King Charles III invited the couple again to Britain, according to the agency.
During the one-week visit, the emperor and the empress are scheduled to attend a welcoming event and banquet at Buckingham Palace, people familiar with the matter said. They are also expected to visit the University of Oxford, where they studied, and inspect River Thames transportation, which the emperor has researched.
The imperial family and the British royal family have a close relationship. When Emperor Emeritus Akihito, father of the current emperor, was crown prince, he attended the coronation of Queen Elizabeth II on behalf of then-Emperor Hirohito, father of the emperor emeritus and posthumously known as Emperor Showa.
Emperor Showa and his wife, Empress Kojun, visited Britain as state guests in 1971, while Akihito and Empress Michiko were invited were invited to Britain as state guests in 1998.
When King Charles III was the prince of Wales, he attended the accession ceremonies for Akihito and also for Emperor Naruhito.
The upcoming trip by Emperor Naruhito and Empress Masako will be the third state visit to Britain since the coronation of the king, after state guests from South Africa and South Korea.