Piers Morgan has repeatedly criticized Meghan Markle, the Duchess of Sussex, for her actions and statements, especially after she and Prince Harry stepped back from their royal duties and gave an explosive interview to Oprah Winfrey. Morgan accused Markle of lying, playing the victim, and damaging the monarchy. He also walked off the set of Good Morning Britain after being challenged by a co-host over his remarks. He later left the show after refusing to apologize.
Piers Morgan and J. K. Rowling, the author of the Harry Potter series, have engaged in a long-running feud on Twitter, where they have exchanged insults and jabs over various topics, such as Brexit, Donald Trump, feminism, and Morgan's own books. Morgan once called Rowling 'one of the most overrated, arrogant, and offensive writers in literary history'. Rowling has mocked Morgan's lack of popularity, literary awards, and intelligence.
Piers Morgan and Jeremy Clarkson, the former host of Top Gear and The Grand Tour, have had a bitter rivalry for decades, dating back to Morgan's days as a tabloid editor who published stories about Clarkson's private life. The two have traded insults, accusations, and even physical blows, with Clarkson punching Morgan at the 2004 British Press Awards. They have occasionally declared a truce, but their feud has never fully ended.
Piers Morgan and Hugh Grant, the actor and campaigner for press reform, have clashed over the issue of phone hacking, which Morgan has been accused of being involved in as a newspaper editor. Morgan has called Grant a 'hypocritical, cheating, narcissistic, smug, self-righteous, odious little toad', while Grant has described Morgan as a 'catastrophic bully' and a 'sociopath'.
Piers Morgan and Lady Gaga, the singer and activist, have had a heated dispute over the issue of mental health, which Gaga has spoken openly about. Morgan questioned Gaga's claims of suffering from post-traumatic stress disorder and accused her of using it as a publicity stunt. Gaga challenged Morgan to a face-to-face interview, but it never happened. Morgan later apologized for his comments, but Gaga said she would not accept it.