Lady Colin Campbell claims 'pathetic' Prince Harry has allowed Meghan Markle to cost him ‘most of his friends' and will make him 'miserable' in her explosive new book

Lady Colin Campbell has branded Prince Harry 'pathetic' and claimed Meghan Markle will 'make him miserable' in an extraordinary extract of her book Meghan And Harry: The Real Story, released today. 

The Jamaican-born British author, 70, has written the book about the Duke, 35, and Duchess of Sussex, 38, although it is not known whether she has ever met them.

According to Page Six, the socialite, who was married to Lord Colin Campbell for one year in 1974 before retaining the title, claimed Harry would be 'too weak' to leave Meghan, who she says has 'caused him to lose most of his friends'.

The release of the book comes ahead of Harry and Meghan's new biography Finding Freedom in August, which is co-written by Harper's Bazaar journalist Omid Scobie. 

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Lady Colin Campbell has branded Prince Harry 'pathetic' and claimed Meghan Markle  (seenin January in London) will 'make him miserable' in an extraordinary extract of her book Meghan And Harry: The Real Story, released today

Continuing to ride her Sussex-shaped fame wave, Page Six reports that an extract in the book reads: 'She's [Meghan] a total opportunist. 

'She knew in advance she'd embark on commercial ventures, which royalty strictly forbids.'

Claiming that Prince Philip nicknamed Meghan 'Tungsten', due to her 'rock-solid self belief', it continues: 'She now has what she wanted — a millionaire's life in Hollywood. She's caused Harry to lose most of his friends. 

'He's weaker than she. He's run ragged. Despite the sex, she will make his life miserable. He has no strength of character to leave her.' 

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The socialite, seen, who was married to Lord Colin Campbell for one year in 1974 before retaining the title, claimed Harry would be 'too weak' to leave Meghan, who she says has 'caused him to lost most of his friends'

Lady Colin, who penned the 1992 biography, Diana in Private: The Princess Nobody Knows, recently claimed she believes Meghan has political aspirations and hopes to one day run for president.  

The author has given a number of interviews about the couple in recent weeks, including one with The Sunday Times in which she said Meghan has 'squandered' the 'most wonderful opportunity' by leaving the royal family.

She also claimed the signs Meghan would 'not adjust' well to life as a royal were apparent shortly after her wedding to Prince Harry in May 2018.

Campbell said she believes the Sussexes moving to the US is part of the plan to make the shift into the political sphere.

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Yesterday Lady Colin told FEMAIL that she believes Meghan has political aspirations and hopes to one day run for president. Pictured: the duchess during a video address to leavers at her old high school

'I know the Duchess of Sussex has political ambitions and I've been told that one day she wants to run for President,' Lady Colin claimed.

'I think everything she is doing, leaving the royal family and moving back to California is part of her plan and she has taken Harry along with her.' 

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Finding Freedom: Harry and Meghan and the Making of A Modern Royal Family is set to be released worldwide online on August 11

At the beginning of the month Lady Colin told the Daily Mail about her new book,adding: 'It's called Meghan And Harry: The Real Story. 

'There are plenty of revelations. I've had members of the Markle family to stay, but I'm not saying anything until closer to the book launch.' 

The release of her book comes ahead of Harry and Meghan's new biography Finding Freedom in August, which is co-written by Harper's Bazaar journalist Omid Scobie. 

Finding Freedom: Harry and Meghan and the Making of A Modern Royal Family, written by  is set to be released worldwide online on August 11, with the hard copy on sale from August 20.

A description of the biography on Amazon promises to offer an 'honest, up-close, and disarming portrait of the confident, influential, forward' Prince Harry, 35, and Meghan Markle, 38.

The 320-page biography, due to be released in August, is expected to be a global bestseller. '

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Lady Colin claimed she believes the Sussexes moving to the US is part of the plan to make the shift into the political sphere. Pictured: Meghan delivering a speech to a crowd at the Nyanga Township in Cape Town in September last year