Buckingham Palace, 'King Charles diagnosed with cancer' - Breaking news. The palace has not indicated where the cancer is located or what type it is, merely stressing that it is considered treatable.

Carlo has started a course of "regular treatments" today. Charles was seen in recent hours at Sunday mass at Sandringham church, near the royal country residence in English Norfolk, for the first time in public after leaving the clinic. While just today the return of his eldest son William to public activity was announced for Wednesday.