JK Rowling will not face police action after officer threw out a complaint that the author "misgendered" trans presenter India Willoughby.

A row erupted after the Harry Potter writer referred to Willoughby as a man in a post online.

The Loose Women presenter previously alleged that Rowling "definitely committed a crime".

However, a Northumbria Police spokesman said: "While we recognise the upset this may have caused, the post was reviewed and did not meet the criminal threshold."

Willoughby lodged a complaint with police after Rowling refused to call the former Celebrity Big Brother contestant a "woman" in an debate online/

The author also repeatedly used “he” pronouns.

Rowling said that if she was contacted by police, she would have told them that: "in my view, India is a classic example of the male narcissist who lives in a state of perpetual rage that he can’t compel women to take him at his own valuation."

However, the 58-year-old hit back and said she is "legally a woman".

"I'm legally a woman. She knows I am a woman, and she calls me a man," Willoughby told Byline TV.