Britain's royal family is down to its last 9 working royals, many of them older and obscure

William, Prince of Wales, is next in line to the British throne, followed by his children.

William has mostly continued with royal engagements during Kate's absence. An exception was the memorial service for his godfather, King Constantine, which he pulled out of last minute on February 27.

"HRH will continue to balance supporting his wife and family and maintaining his official duties as he has done since the start of the year," a Kensington Palace spokesperson told Business Insider, using the abbreviation for "his royal highness."

Royal biographer Phil Dampier previously told BI that the monarchy "could, with the wrong unforeseen circumstances, collapse quite quickly," if something were to happen to both the king and William.

"It could lose a lot of power and ability to operate if god forbid, some other disaster happened," he said.

Camilla, formerly known as the Duchess of Cornwall, became queen consort when Charles ascended the throne on September 8, 2022. Her title was changed to queen after his coronation in May 2023.

Camilla has stepped up and taken on a greater proportion of royal duties during the king's absence. A royal source, who spoke anonymously to The Telegraph, said she was "proud" to take on more work.

Jack Royston, a royal commentator, told BI that Camilla faces "a lot of responsibility and pressure," especially while support for the monarchy appears to be decreasing among young people.

Edward, 60, is the king's youngest brother and the most senior male in the family after William.

He inherited the title of Duke of Edinburgh in 2023. It was previously held by his father, Prince Philip.

Edward is married to Sophie, Duchess of Edinburgh, and they have two children together: Lady Louise Windsor, 20, and James, Earl of Wessex, 16.

Edward participated in various public engagements in March, including a visit to Uganda on behalf of The Duke of Edinburgh's International Award Foundation and Association.

Edward's wife, Sophie, has been a member of the royal family since their wedding in 1999.

Sophie worked in PR and Edward ran his own production company until 2002, when they announced that they would become full-time working royals to support Queen Elizabeth II in the year of her Golden Jubilee.

Sophie is a patron of 70 charities and organizations, according to her biography on the royal website. Causes she supports focus on the well-being of children and young people, equality for women, and eliminating avoidable blindness.

She inherited the Duchess of Edinburgh title when Edward was named duke in 2023.

Anne, The Princess Royal, is Charles's only sister. She is often credited as being one of the busiest and most hard-working royals.

In 2023 she carried out 457 engagements, the most of any royal, according to The Telegraph.

Though she often maintains a low profile, Anne had a key role after her mother Elizabeth II died in 2022. She accompanied the coffin as it traveled from Balmoral Castle to Edinburgh, and later to Windsor, England, for the funeral.

Prince Richard, Duke of Gloucester, is a cousin of Elizabeth II.

He is associated with 150 charities and organizations, including those that support the environment, veterans, and humanitarian issues. He also filled in at recent events including the Commonwealth Day service in March and the memorial service for Greece's King Constantine in February.

Richard is so far back in the line of succession that he isn't featured on the royal website's succession page, which lists the 24 adults and children closest to the throne.

Birgitte, the Duchess of Gloucester, 76, was born in Denmark and relocated to the UK to attend finishing school in Cambridge, where she met Prince Richard.

They wed on July 8, 1972, and Birgitte has been a working royal ever since.

Birgitte keeps a low profile and isn't often reported on in the media. She supports more than 60 organizations across the arts, the military, sports, health, welfare, and education, the royal website states.

Prince Edward was a first cousin to both Queen Elizabeth and Prince Philip, and he became the oldest working royal after the Queen died at the age of 96.

He appeared to have a close relationship with Elizabeth; at the monarch's Platinum Jubilee in 2022, he was the only royal to accompany Her Majesty on her warmly received appearance on the palace balcony, People reported.

Richard's work for the monarchy began after he retired from the British Army in 1976 at the age of 41, according to the royal website.

Similarly to Richard and Birgitte, Edward is not as well known as some of the younger royals who are among the top 24 in the line of succession.

Alexandra is the sister to Prince Edward, Duke of Kent.

At the time of her birth in 1936, Alexandra was sixth in line to the throne, Town and Country reported in 2023. She's now 57th in line.

She too seemed to be close to Elizabeth II, having been a bridesmaid at her wedding to Prince Philip in 1947, the outlet reported. In recent years, she supported the late monarch at events including Trooping the Colour. More recently, she attended King Charles' coronation in May, and she was also present at King Constantine's memorial service in February.