Prince Charles, 72, is the longest-serving King-in-waiting in British history.
The heir to the throne has spent nearly all his life waiting to succeed his mother, who has now reigned for more than 68 years.
But as the Prince of Wales grows older, he may decide to pass the honour on to his son.
Prince William, 38, is second in line to the throne and has been since birth.
UCL s Constitution Unit, a wing of the School of Public Policy, has weighed in on whether Charles is likely to rescind his claim to the throne.
They said: Having waited over 60 years as heir apparent, it would be perfectly natural for Prince Charles to want to assume the throne and perform the royal duties for which he has spent so long preparing in waiting.