Buckingham Palace has confirmed that King Charles III was briefly hospitalized on March 27, 2025, after experiencing temporary side effects from his ongoing cancer treatment. The 76-year-old monarch underwent a scheduled medical procedure earlier in the day, which led to a short period of observation in a hospital. He has since returned to Clarence House, his official residence in London.
As a precautionary measure, acting on medical advice, the Palace announced that King Charles has postponed his engagements scheduled for Thursday afternoon and that his diary program for Friday will also be rescheduled. Details about the specific nature of the side effects or the current status of his health remain undisclosed, consistent with the Palace’s approach since his cancer.

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