Royal biographer Tom Bower has said he believes that Meghan Markle and Prince Harry's trip to Nigeria was to allow Meghan "to embarrass the Royal Family".
Bower also claimed that Queen Camilla and Prince William were behind the King’s decision not to see Prince Harry, as he made his return to the UK on Wednesday.
This comes as the Duke of Sussex attended a special thanksgiving service at St Paul's Cathedral, to mark the 10th anniversary of the Invictus Games.
The Duchess chose not to accompany the Prince to the event, instead waiting to travel with him to Nigeria.
Tom Bower says Meghan Markle 'needed Harry' to bolster her career
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Speaking to Nigel Farage on GB News, Bower questioned the intentions of the trip and wondered if Meghan's discovery of being "43 per cent Nigerian" was "true".
Bower added: "What this is really all about is Meghan is going to Nigeria because she says her mother's family originally was from Nigeria, and she's looking at her roots."
Criticising the trip, Bower said Meghan is going to "play the Duchess" and seek to "embarrass the Royal Family" during their visit.
Bower fumed: "She's going to play the Duchess there, she's going to play the Royal Family card. The woman who fled to California for her privacy and can't do too much for the royals, is going to play the royal card."
Prince Harry returned to the UK alone for the Invictus Games anniversary
Getty
Following Prince Harry's visit to the UK and his failure to see his father King Charles, the royal biographer claimed the Duke was "denied the photo opportunity" ahead of their bid to "boost the brand".
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Bower explained: "Harry was desperate for a photo opportunity with the King, so when he gets Nigeria he can say, 'I come as an emissary of the Royal Family, and the King denied him that opportunity. Rightly so.
"I think this is a sign that he realises finally that with the Sussexes, he's on a losing card."
Hitting out at Meghan's decision to snub the UK for Nigeria, Bower revealed: "Harry needed her. The problem is, he couldn't form relationships with other women. And Meghan stepped into the role.
"She's a great actress. She knew he was needy and she needed him to bolster her fading, if not terminal career. And she's got what she wanted, except she probably wanted to be Queen rather than just the Duchess.
Tom Bower says Meghan and Harry are 'playing the royal card' in Nigeria
GB News
"Now she's got the title, she's got the money, and he is just like a lapdog going behind her, forgetting his loyalty to the country and to his family and to his grandparents as well."
Turning the conversation to Prince Harry's brother, William, Bower claimed that the Nigeria trip by the Sussexes will "put the Wales' in a bad light", amid Princess Kate's cancer.
Bower told GB News: "What they're really doing is putting Kate and William in a terrible light. There is poor Kate, suffering from her illnesses; they should be in Nigeria, they should be doing the work and now the Sussexes have stepped in to embarrass the King and rightly, Buckingham Palace decided, no we're not going to play their game on this occasion.
"Treachery is a strong word but [Harry] is a disloyal, traitorous man, son and brother and member of the British public. He has behaved appallingly. His book, the Oprah Winfrey film, all his conduct and supporting Meghan in her bid for all this different branding.
"He has really behaved appallingly towards his family and thankfully, the King has finally seen it."