A royal commentator has blasted Prince Harry and Meghan Markle as "poisonous" and said that they "can't be trusted."
This comes after Harry made a brief visit to the UK to visit his father, The King, as news broke that Charles has cancer.
The Duke spent less than 45 minutes with his father, following the announcement before returning to the US.
Harry flew to Los Angeles where he prepared to travel again to Las Vegas, to present an award at the 13th Annual NFL Honours.
Harry flew to the UK last week to visit his father
PA
The Duke and Duchess of Sussex have not publicly addressed the health of King Charles but insiders claim they have "reached out privately".
Speaking to GB News Bower said: "When Harry announced he was doing his dash across the Atlantic last Tuesday, I said many times how suspicious it was.
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"I didn't believe he was coming on a charitable quest to be by his father's side. Now I've been proved right.
"You can't trust the Sussexes. Everything is done in their own self-interest and they have been absolutely poisonous in their treatment and their comments about Britain and the monarchy.
King Charles was diagnosed with cancer GETTY"We've gone through it all so many times, it's dreadful. And I do hope that now, when Harry was kicked out after 30 minutes, having flown from California.
"He was not invited to stay the night in any of the many palace bedrooms, and then he scuttled back to California the following morning, I think he's got the message he's not welcome in Britain.
"I just hope that when King Charles recovers, he finally puts paid to the Sussexes and takes away their titles or whatever tells them very firmly they're not welcome in Britain."
He added: "I think Harry volunteered to come to the UK because he didn't want to appear in Las Vegas, not having visited his father.
Tom Bower slammed The Sussexes
GB News
"Why did he suddenly dash over? It was all his self-interest. It was a gimmick. It was to get publicity. It was to show that he was the dutiful son of his American youth supporters.
"Don't let us in any way think that this was because he feels warmth towards his father and family.
"And after all, I'm sure Queen Camilla didn't see him. Prince William certainly didn't want to see him.
"He hasn't got many friends left in England. He's cut them all off. He's an outsider, he's an outcast.
"He should be firmly told not to bother coming back anymore."