He added: “I seem to remember Kate talking about Louis at Twickenham when she first became patron [of English Rugby].

“[She was] talking about how he was, I’m paraphrasing, but a, sort of, steamroller people, a bit of a bruiser.”

At four-years-old, Louis is the youngest of the three Cambridge children.

He has two elder siblings, nine-year-old Prince George and seven-year-old Princess Charlotte.

Earlier this month, Prince George made his debut at Wimbledon as he joined his parents in the royal box at the Men’s Singles final.

In an earlier Royal Round-Up, Mr Palmer spoke how George appeared to break a certain rule that members of the Royal Family tend to stick to.

Speaking to host Pandora Forsyth, he said: “Somebody shouted out to George about who he wanted to win [the match].

“He [George] appears to say he wanted Djokovic to win”, adding that as royals, they “aren’t supposed to really do that”.

The young royal, who recently celebrated his ninth birthday, has previously attended football matches with his parents.

Just like her brothers, Charlotte is also keen on various sports.

During a past tour of Ireland, Kate revealed that her middle child has a passion for gymnastics.

Also, People previously reported that the Cambridge’s only daughter had been taking weekly private ballet lessons at a dance school in south London.

Prince George, Princess Charlotte and Prince Louis made their debut in the annual British royal family carriage procession during the Trooping The Colour.

The Cambridge kids rode with their mum, the Duchess of Cambridge, and their step-grandmother, Camilla, Duchess of Cornwall, in the parade.