King Charles and Queen Camilla delighted royal fans with their appearance at the RHS Chelsea Flower Show, where they were joined by some special members of the Royal Family.

Other working members of the Firm have become more prominent in recent months as the King and Princess Kate have taken time off due to receiving treatment for cancer.

Some of them were with the King and Queen as they toured the gardens, with celebrities including Dame Judi Dench, Dame Mary Berry, Carol Vorderman and Dame Joan Collins.

It was also a family affair for Camilla as her daughter Laura Lopes and her husband Harry joined the group, along with her sister Annabel Elliott.

The working royals accompanying the King and Queen were the Duke and Duchess of Gloucester, as well as Prince and Princess Michael of Kent and Baron and Baroness Fellowes.

The Duke and Duchess of Gloucester, or Richard and Birgitte, having been carrying out royal duties for several decades despite both being in their seventies now.

Prince Richard was a paternal cousin of the late Queen Elizabeth, born in August 1944 to Prince Henry, Duke of Gloucester and Princess Alice, Duchess of Gloucester.

As the second son Richard was not in line to inherit and practised as an architect until his older brother William died in 1972 with no children, leaving him to inherit the title.

The Duke married Birgitte van Deurs in July 1972 and they have since had three children together – Alexander, Davina and Rose.

Prince Michael of Kent meanwhile is the youngest son of Prince George, Duke of Kent and his wife Princess Marina of Greece and Denmark, and his older brother is Prince Edward, Duke of Kent.

Unlike his sibling Prince Michael and his wife Baroness Marie-Christine von Reibnitz are not technically working royals but they are still associated with around 100 charities and organisations.

He is another one of the late Queen’s paternal first cousins, as his father Prince George was her uncle.

The Prince and Princess married in 1978 and she has since been styled as Her Royal Highness Princess Michael of Kent.

Perhaps the most unexpected guests of the occasion were Julian, the Baron Fellowes and his wife Emma, the Baroness Fellowes, who accompanied Prince and Princess Michael of Kent.

The Baron is best known for creating the hit TV show Dowton Abbey, alongside other period dramas such as Belgravia, The Gilded Age and Gosford Park.

His wife Emma is lady-in-waiting to Princess Michael, and in 2012 was granted a royal warrant of precedence by the late Queen Elizabeth giving her the same rank and style as if she were the daughter of an earl.