Expectation in the heir: The next generation waiting to ascend the throne

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Expectation in the heir: The next generation waiting to ascend the throne

In 2012, Prince Charles, 64, appeared to comment light-heartedly on his status as Britain's longest-waiting heir to the throne, quipping: "Impatient? Me? What a thing to suggest! Yes, of course I am".

In the promotional video released by Clarence House he also joked: "I'll run out of time soon. I shall have snuffed it if I'm not careful!"

Once Charles' time comes, the Duchess of Cornwall will be Queen Consort, a role the Duchess of Cambridge will be keenly observing