The Princess of Wales has joined King Charles and other senior royals at a major Remembrance event in London.

Catherine, 42, is gradually returning to public duties following her cancer chemotherapy treatment earlier this year.

She joined other members of the Royal Family as well as senior politicians at the Royal Albert Hall on Saturday night.

The King received a standing ovation from the audience, but Queen Camilla is recovering from a chest infection and was not present.

The Festival of Remembrance – a Royal British Legion event featuring music performances and personal testimonies – is being held to pay respect to serving personnel, veterans and their families.

The commemorative concert and a Sunday service at the Cenotaph are among the two most important events on the royal calendar.

Catherine is also expected to attend the chief Remembrance Day ceremony on Sunday.

King Charles, 75, will lead the royal family at that event too. The King, who is still receiving cancer treatment, will lay a wreath at the memorial in Whitehall, London on Sunday.

The palace announced in February that the King had been diagnosed with cancer and would take time away from public life to undergo treatment.

The following month, Catherine revealed that she too had been diagnosed with cancer and was getting treatment.

In September she announced that she had completed her cancer treatment and was looking forward to undertaking more engagements “when I can”.

But she added her focus was “doing what I can to stay cancer free”.

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.”

Queen Camilla’s absence followed medical guidance “to ensure a full recovery from a seasonal chest infection” and to protect others, the Palace said in a statement on Saturday.

You can watch the Royal British Legion’s Festival of Remembrance on BBC One from 2100GMT on Saturday 9 November or on iPlayer.