Prince Harry's popularity has "fallen off a cliff" since the start of his relationship with Meghan Markle, Nigel Farage has said, after describing the Queen Mother as an "overweight, chain-smoking gin drinker".
Speaking at the Conservative Political Action Conference in Sydney, the Brexit Party leader said the Duke and Duchess of Sussex's declaration that they would only have two children was "irrelevant", but praised Prince Harry's "boisterous" early years.
Mr Farage, who disagrees with Prince Charles on climate change, said he hoped the Queen lived long enough to stop him becoming king.
"Here was Harry, here he was this young, brave, boisterous, all male, getting into trouble, turning up at stag parties inappropriately dressed, drinking too much and causing all sorts of mayhem," Mr Farage said.
"And then, a brave British officer who did his bit in Afghanistan. He was the most popular royal of a younger generation that we’ve seen for 100 years.
“And then he met Meghan Markle, and it’s fallen off a cliff. We’ve been told in the last week that Meghan and Harry will only have two children," he said.
Mr Farage said the Duke and Duchess' decision was "irrelevant" because of "2.6 billion Chinese and Indians", The Guardian reported.
"We’re all completely ignoring the real problem the Earth faces, and that is the fact the population of the globe is exploding but no one dares talk about it, no one dares deal with it, and whether Prince Harry has two kids is irrelevant given there are now 2.6 billion Chinese and Indians on this Earth."
He praised the Queen as an "amazing, awe-inspiring woman" that the UK is "bloody lucky" to have, and who would live longer than her mother because she has a healthier lifestyle.
Mr Farage said he would like the Queen to live long enough to stop "Charlie Boy" becoming king.
"Her mother, Her Royal Highness the Queen’s mother was a slightly overweight, chain-smoking gin drinker who lived to 101 years old," Mr Farage said.
"All I can say is Charlie Boy is now in his 70s … may the Queen live a very, very long time.”
Mr Farage opposes Prince Charles' views on climate change, which saw him call for more EU legislation in 2008.
A spokesman for Nigel Farage said the comments were "enormously supportive" of the royal family, and denied that he was attacking the Queen Mother by referencing her smoking and drinking.
"He was taking the opportunity to big up HMQ", the spokesman said.
"The point he's trying to make is, we have some very good royals, thank you very much, with astonishing genes.
"So frankly, we don't really have to worry about the others because they're not going to get there.
"If [The Queen Mother] can make it to 101 on fags, gin and good living, imagine how the Queen's going to do."
The spokesman said he had not heard a recording of the comments about the Duke and Duchess of Sussex, but said they were "not how I've ever heard him speak".
"It just doesn't sound like him," he said.