Britain's King Charles shocked the world last week after it was revealed that the 75-year-old monarch is suffering from prostate cancer.

While this has led some to speculate over whether the king will abdicate in favor of his eldest son, some observers insist that will never happen. 

Royal biographer points to 1937 law

The claim was recently put forward by Robert Jobson, who is the author of last year's "Our King: Charles III: The Man and the Monarch Revealed."

"We don't know how the treatment is gonna go," Jobson was quoted as telling The Sun's royal correspondent Matt Wilkinson in an interview.

"One thing I would say, absolutely, I don't think there will ever be an abdication," the writer insisted. "I know I've heard people talking about that, and pundits just, it's a no, no, there's no need to, we have a statute for a regency, so we don't need anybody to abdicate."

The Sun noted that Jobson was referring to a piece of legislation passed by Britain's parliament in 1937 known as the Regency Act.

Jobson believes the king will have a reduced public presence

Under the law's provisions, a reigning monarch is permitted to turn over his or her duties to someone else in the event that he or she becomes incapacitated.

"What we will not see him doing is the public face-to-face duties and where that's the case we might see William step in, save for doing receiving the credentials of a new ambassador or something like that," Jobson explained.

"I can see that happening,"  the author continued before adding, "But as for the king giving up his position constitutionally, I just don't think that's ever gonna happen."

The people around him are gonna have to have less expectations in terms of the way that his schedule was drawn," Jobson added.

Fellow author says abdication would not be "in the best interests of the monarchy"

Jobson is not alone in his assessment, as fellow royal biographer Tom Bower expressed similar sentiments while speaking to GB News.

'King Charles would never abdicate'

Royal biographer, Tom Bower, says 'it's not in the best interests of the monarchy or of Britain to abdicate'.

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"Oh no, he won't abdicate," Bower told GB News. "And it wouldn't be in the best interests of the monarchy or of Britain for him to abdicate."

"And there's no reason for it, you know, I mean my God, we've had the most amazing progress in cancer treatment now," Bower added.