According to a professor at the University of Oxford, the Duchess of Cornwall, 70, will be queen because of the Treason Act 1351 and she is also the wife of the sovereign under section two of the Regency Act 1937.
The professor has revealed that Camilla Queen will be Consort, which is the title given to the wife of a monarch.
She will be the queen in the legal and symbolic sense, but this does not mean that she will get the royal title.
Professor Pavlos Eleftheriadis revealed to the Daily Star Online: "Camilla will be a" queen "in the limited legal sense of being a woman of the sovereign, or & # 39; queen-consignee & # 39; . "
The law professor said: "She can not be forced to be called" Queen Consort ", but her role as the King's wife is by definition that of Queen.
"However, this is a very limited role, which does not require the use of the title" Queen & # 39 ;.
"It is clear that Camilla is the wife of Prince Charles, the future sovereign.The civil ceremony was valid.
" Permission for marriage was given by the Privy Council in March 2005, under the Royal Huwishand 1772. This can no longer be in dispute, so when he joins the throne, she will be the king's wife.
"However, the wife of a head of state is not a joint head of state: the sovereign reigns alone, in this sense Camilla will be a" queen "in the limited legal sense that he is the wife of sovereign."  When Charles and Camilla married, Clarence House gave a statement that she intended to use the title "HRH The Princess Consort".
A former spokesman for Buckingham Palace Dickie Arbiter said that Prince Charles has a different royal title when he becomes the king.
M. Arbiter said: "He could choose one of his other names Philip, Arthur or George."