The visit is designed to bolster the “special relationship” between the U.S. and the U.K., a term coined by Winston Churchill after World War II to describe the diplomatic and cultural ties between the two nations.

He is quick on his feet and can wriggle for Britain.  Before he could talk, he had generated a million words.  He is a fashion icon who triggered an unlikely rush on smocked sailor suits.  He is the future George VII, and he will be one year old on Tuesday.

Prince Harry has notched up a royal first by recording a video message to thank the people of Brazil for their hospitality during his stay in the country.  It is a long-standing custom for members of the Royal family to write to their hosts to thank them after they have been abroad, but the Prince’s message is the first to be filmed.

This is succession planning. It's about laying down memories in Australia against the time the Queen dies. The first tour is the one that matters – the tour with the young couple and the baby, the gloss not worn off their marriage and possible princely misdemeanours of the child far in the future.