Piers Morgan quit Good Morning Britain after Meghan Markle put in an official complaint to ITV.
The Duchess of Sussex formally complained to the broadcaster after Piers said he "didn't believe" she had suicidal thoughts while pregnant with son Archie, the PA news agency understands.
On Monday's GMB, while discussing Meghan and Prince Harry's interview with Oprah, Piers said: "I wouldn’t believe it if she read me a weather report," hours after the interview aired in the US.
"The fact that she's fired up this onslaught against our royal family I think is contemptible.
Then on Tuesday show, Piers stormed off the set of GMB after an on-air row with weather presenter Alex Beresford who criticised him for “continuing to trash” the duchess, and called his actions "diabolical."
The 55-year-old's exit was announced by ITV on Tuesday evening with a statement reading: "Following discussions with ITV, Piers Morgan has decided now is the time to leave Good Morning Britain."
PA reports that the duchess's concern was not about the personal attacks on the validity of her racism allegation made against the royal family, or her claims she was not supported by the institution when experiencing suicidal thoughts, but how Piers' comments may affect the issue of mental health generally and those attempting to deal with their own problems.
ITV bosses had asked Morgan to apologise to the duchess during Tuesday’s show but he refused, the Telegraph reported.
Speaking outside his home on Wednesday morning, Piers doubled down on his comments and said: "I believe in freedom of speech, I believe in the right to be allowed to have an opinion. If people want to believe Meghan Markle, that’s entirely their right.
"I don't believe almost anything that comes out of her mouth and I think the damage she's done to the British monarchy and to the Queen at a time when Prince Philip is lying in hospital is enormous and frankly contemptible.
"If I have to fall on my sword for expressing an honestly held opinion about Meghan Markle and that diatribe of bilge that she came out with in that interview, so be it."
