King Charles III was diagnosed with cancer this year after treating an enlarged prostate. His daughter-in-law, Kate Middleton, completed chemotherapy in September.

King Charles III is expected to use his annual Christmas message to highlight health workers, at the end of a year in which both he and the Princess of Wales were diagnosed with cancer.

King Charles has used his annual TV message to give personal thanks to the medical staff who have cared for him this year. Charles announced his cancer diagnosis in February, the same time as his daughter-in-law Kate shared she was having abdominal surgery.

King Charles III has used his Christmas message to hail the efforts of healthcare workers and all those who support others, before praising the medical staff who provided “strength, care and comfort” during his and the Princess of Wales’ cancer treatments.

As Charles put it, “I am deeply grateful, too, to all those who have offered us their own kind words of sympathy and encouragement.”

The British monarch recorded his annual holiday address from the chapel of a former hospital, rather than from a palace.

Britain’s King Charles thanked medical workers who treated him and Princess Kate after their cancer diagnoses in his annual Christmas message on Dec. 25.

King Charles III is expected to use his annual Christmas message broadcast later in the day to highlight health workers. He and close members of the royal family attended Christmas Day services Wednesday at a church on Sandringham,