Scroll down for Kate’s health statement and a full timeline of Harry’s royal feud

With the Princess of Wales, 42, undergoing preventative treatment for cancer and King Charles, 75, only recently getting back into royal duties after his cancer diagnosis, royal expert Tom Bower recognised the ‘huge pressure’ on Prince William.

7A royal author has claimed that Kate Middleton and Prince William are ‘deeply upset’ by having Meghan Markle and Prince Harry’s ‘brand operation rubbed in their faces’Credit: AP7Tom Bower suspected that Meghan and Harry will be feeling ‘some sort of secret glee in Montecito’, whilst the Waleses go through ‘tragedy’Credit: AP7It comes after Meghan launched an Instagram brand, American Riviera OrchardCredit: Getty7The Sussexes went on a trip to Nigeria, whilst Princess Kate is undergoing treatment for cancer

But not only this, the royal pro also claimed that this ‘pressure’ isn’t helped by how insensitive Prince Harry, 39, and Meghan Markle, 42, appear to be.

As the Waleses deal with arguably the most difficult time of their lives, Tom Bower claimed that the Sussexes’ new ventures are ‘rubbing salt in the wound’ for Kate and Will.

Speaking exclusively to Woman, Tom shared why he believes William to be ‘furious’ with Harry, as he said: “Not only is there the pressure on William, but also the constant sniping from California.

“I’m sure he’s furious with Harry, he’s behaved appalling.

“Not only by the way he left England and exploited his royal connections but also his book – the things he said about the Waleses were so outrageous, rude, unfair and in my opinion, untrue. It’s a real struggle for the Waleses.”

Not only did Harry’s book Space claim that William ‘attacked’ Harry in a row over Meghan Markle, but it also claimed that William and Kate Middleton encouraged him to wear the infamous Nazi uniform.

While they’re establishing this so-called brand Sussex, the family here is going through torment

Tom Bower

Revelations aside, Tom claimed that Harry and Meghan may be feeling ‘secret glee’ at the situation.

After their recent trip to Nigeria, and the launch of Meghan’s new Instagram brand, American Riviera Orchard, Tom added: “One just always feels like there may be some sort of secret glee in Montecito.

“While they’re establishing this so-called brand Sussex, the family here is going through torment.

“After Charles’ diagnosis, Harry came over for half an hour and that’s it, he’s done nothing else.

I’ve seen Princess Kate in action – she ignores petty rows, is extremely popular & just keeps going, reveals royal expert

“I can imagine that Kate and William are deeply upset by having the Sussexes’ brand operation rubbed in their face while they’re going through this tragedy.”

Despite Tom’s claims, it has been previously reported that Kate is “excited” after being well enough to be briefed on the findings of a taskforce she set up to help the under 5s.

The mother-of-three has read a 60-page report on her early years project and is said to have been “kept up-to-date” with the work.