“There’s a lot of focus on them. There’s been all the focus on Catherine since her cancer diagnosis and on William as he tries to navigate through the choppy waters of making sure the Royal Family has relevance.

“I’m not surprised – we just know there is a degree of interest in the Royal Family.

“Our programme proves it, great swathes of our audience are American, so it actually does prove that in America they want authentic royalty, not fake royalty – the one who are genuinely going about their business on behalf of the British Royal Family, the future king in this case and his wife,” he said in a scathing snub to the Sussexes.

Rupert Bell laid into the Sussexes (Image: YouTube)

Bell added: “Going back to the poll, it shows that William and Catherine do have some credibility on the global scale, and I think that’s very important. It’s very important for Britain and the soft power.

“If you’re finding that in America polls like this are showing that Prince William and the Princess of Wales have a very favourable rating, then it’s good when they will be increasingly going onto the global stage promoting Britain in whichever way.”