In her Platinum Jubilee message, The Queen expressed her "sincere wish" for Camilla, Duchess of Cornwall, to become Queen consort when the Prince of Wales becomes King.

Part of the announcement marking her 70 years on the throne, Elizabeth II’s significant remarks will shape the future of the monarchy.

It means the former royal mistress will now stand shoulder to shoulder as Queen with the Prince of Wales when he becomes King, but how much do most people know about Camilla?

Bridgwater Mercury: Camilla was a down-to-earth Sussex girl who grew up with a love of horses. Picture: PACamilla was a down-to-earth Sussex girl who grew up with a love of horses. Picture: PA

The Duchess of Cornwall’s public image has been transformed after she was initially cast as the third person in the Prince and Princess of Wales’ marriage, before becoming a campaigning member of the monarchy prepared to serve the nation.

Underneath, she was the down-to-earth Sussex girl who grew up with a love of horses and happened to fall in love with a prince.

Why should Camilla be Queen?

Bridgwater Mercury: Camilla's most significant role is supporting the prince in his role of heir to the throne. Picture: PACamilla's most significant role is supporting the prince in his role of heir to the throne. Picture: PA

During the 17 years she has been married to Charles, the duchess has grown into her role and is now an assured royal host when staging events at Clarence House and a confident representative of the Queen when invited to foreign lands.

She is patron or supporter of a number of literacy charities, speaks out in support of victims of domestic violence and champions several animal welfare organisations.

But her most significant role is supporting the prince and being the comforting presence at home that enables him to take on the role of heir to the throne.

A brief history of Camilla Duchess of Cornwall

Bridgwater Mercury: Camilla grew up in rural Sussex. Picture: PACamilla grew up in rural Sussex. Picture: PA

Born in London on July 17, 1947 Camilla is the daughter of Bruce and Rosalind Shand.

She grew up in rural Sussex and was educated at the Queens Gate School in South Kensington, before finishing school in Switzerland and France.

The prince first met fun, confident Camilla on Windsor Great Park polo field in 1970 when he had just left Cambridge University, a year before he joined the Royal Navy.

Legend has it that she was the one to remind him of a long-standing liaison between her great-grandmother Alice Keppel and King Edward VII.

“My great-grandmother was your great-great grandfather’s mistress – How about it?” she is supposed to have asked.

No marriage proposal came despite the closeness between the pair and in 1971 Charles joined the Navy. The relationship cooled as he dedicated himself to duty and long periods away at sea.

Camilla subsequently wed cavalry officer Andrew Parker Bowles in 1973 and Charles married Diana in 1981 – but at some point in the 1980s it is thought their romance resumed.

In 1994, Charles had confessed to adultery in a TV interview with broadcaster Jonathan Dimbleby, but only after his marriage had “irretrievably broken down”.

The following year Diana made the revelation in the BBC Panoroma documentary “Well, there were three of us in this marriage, so it was a bit crowded,” a reference to Camilla.

Charles and Camilla make it official

Bridgwater Mercury: Charles and Camilla were married in a civil ceremony at Windsor Guildhall in 2005. Picture: PACharles and Camilla were married in a civil ceremony at Windsor Guildhall in 2005. Picture: PA

After Charles and Camilla both divorced – and Diana died in 1997 – the duchess’ emergence as the prince’s long-term partner was part of a carefully planned PR campaign masterminded by the heir to the throne’s spin doctor Mark Bolland.

Their first public appearance together was outside the Ritz hotel in London in 1999, dubbed Operation Ritz, where the mass of waiting photographers had been tipped off.

The culmination of the romance was a marriage between the long-time lovers who wed in a civil ceremony at Windsor Guildhall on April 9, 2005.

With Camilla by his side, Charles appears more relaxed and many times during royal events she has cajoled and encouraged him to try something new or have some fun.

Now the Queen’s wishes have bestowed upon Camilla the ultimate accolade in recognition of her importance to Charles and the monarchy.

What is Queen consort?

Bridgwater Mercury: As the Prince of Wales' spouse, Camilla was already technically set to be his queen consort when he becomes king. Picture: PAAs the Prince of Wales' spouse, Camilla was already technically set to be his queen consort when he becomes king. Picture: PA

A royal consort is the spouse of a serving monarch whose role is to provide support and companionship during the monarch's reign.

They do not have a formal position, unlike the king or queen, and they don't have any set tasks and responsibilities.

Traditionally, they aid the monarch with their public engagements, from hosting heads of state to attending charity galas.

The wife of a king, known as a queen consort, is crowned at a coronation ceremony, unlike the husband of a queen.

As the Prince of Wales’ spouse, Camilla was already automatically set to be his consort and also technically queen when he becomes king.