Meghan's intervention follows reports that she had written to her father-in-law after appearing with Prince Harry on the Oprah Winfrey Show in March 2021.

During the interview, she claimed that a member of the Royal Family had speculated about how dark their unborn son's skin would be, plunging the monarchy into a racism storm.

The Daily Telegraph reported that the letter she sent was a reply to one from Charles, who was the Prince of Wales at the time, in which he expressed his sadness over the split within the family.

A source told the paper that Meghan will not attend the King's coronation on 6 May because she feels she did not receive a satisfactory response to her concerns.

However, in a statement released through journalist Omid Scobie, who is close to the Sussexes, the couple said: "The Duchess of Sussex is going about her life in the present, not thinking about correspondence from two years ago related to conversations from four years ago.

"Any suggestion otherwise is false and frankly ridiculous.

"We encourage tabloid media and various other royal correspondents to stop exhausting the circus that they alone are creating."

Harry will attend the historic royal occasion next month alone, with Meghan remaining in California with their two children.

It follows months of speculation about whether the couple would turn up because of their bitter rift with Buckingham Palace.

Harry's attendance will see him appear in public with the rest of the Royal Family for the first time since he was critical of them in his tell-all memoir earlier this year.

He and Meghan were also critical of the monarchy in their Netflix documentary.

The couple's relationship with the Royal Family has been strained since they stepped back from their royal duties in 2020. They have since moved to the United States and launched a number of independent projects.

The Royal Family has not commented on Meghan's denial.