Both her and the King have since made limited returns to public duties. Charles recently toured Australia and Samoa, an overseas trip during which his treatment was paused.
On Thursday, Prince William described the past year as the “hardest year” of his life following both his wife and his father being diagnosed with cancer.
“I’m so proud of my wife, I’m proud of my father, for handling the things that they have done,” he told reporters at the end of his visit to South Africa to promote his Earthshot eco-project.
“But from a personal family point of view, it’s been brutal.”
You can watch the Royal British Legion’s Festival of Remembrance on One from 2100GMT on Saturday 9 November or on iPlayer.
