Catherine, Princess of Wales joins royals at Remembrance event

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.

For Catherine, Remembrance events had been flagged as an example of when she might make a public appearance.

She had already made a few tentative returns, beginning with her first public appearance after her cancer diagnosis at the annual Trooping the Colour parade in June.

In September, she attended her first official work meeting since her treatment ended.

Attending the Remembrance events, which are such a big date in the royal calendar, will be seen as another major milestone in her return to public life.

In October, Catherine visited Southport with the Prince of Wales – where they met the families of three children killed in a knife attack in the town.

On Thursday, Prince William described the past year as the “hardest year” of his life.

“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 BBC One from 2100GMT on Saturday 9 November or on iPlayer.