Meghan says the media and social media have written hate about her and that it has prompted death threats.

Speaking in their six-part Netflix documentary Harry & Meghan, for which they were rumoured to have been paid $US100 million ($148 million), the pair also blamed the British press for racist coverage of her.

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Clarkson penned his column after the final episodes, in which Harry accused his brother Prince William of “screaming and shouting” during a private meeting, and accused other royal households of leaking against them, out of jealousy.

The Who Wants To Be A Millionaire? presenter and News Corp columnist, wrote, that he “hated” Meghan and dreamt of the day she would be forced to parade naked through the streets of Britain while a crowd chanted “shame” and threw excrement at her.

It was a reference to the famous scene in Game of Thrones where the villain Cersei Lannister is made to endure public humiliation as religious repentance.

The column prompted an unprecedented number of complaints to the Independent Press Standards Organisation and more than 60 MPs wrote to The Sun’s editor Victoria Newton demanding an apology.

On Monday, Clarkson said in a tweet that he had “put his foot in it” with the “clumsy reference” to Game of Thrones but did not apologise.

The Sun replaced the column with Clarkson’s tweet, which the paper said was at the columnist’s request.

Early on Christimas Eve, the paper went further and issued an unequivocal apology.

“Columnists’ opinions are their own, but as a publisher, we realise that with free expression comes responsibility,” the statement said.

“We at The Sun regret the publication of this article and we are sincerely sorry.

“The article has been removed from our website and archives,” the statement said.

Clarkson has not issued any further statements or personally apologised. His own daughter Emily was one of the first leading critics of the column.