FILED - 21 November 2023, United Kingdom, London: The Prince and Princess of Wales during the ceremonial welcome for the President of South Korea, Yoon Suk Yeol, and his wife, Kim Keon Hee, at Horse Guards Parade, central London, on day one of the state visit to the UK. The Princess of Wales has revealed she is undergoing chemotherapy treatment for cancer. She announced the news in a pre-recorded message that was broadcast on Friday evening. Photo: Chris Jackson/PA Wire/dpa