At the police station, Ms Kerr is alleged to have become “abusive and insulting” towards PC Stephen Lovell.

Footage from the officer’s body worn camera was played to a jury sitting at Kingston Crown Court on Monday, in which Ms Kerr uses an expletive and tells the officer he was “stupid and white”.

Prosecution barrister Bill Emlyn Jones KC told the jury the comments left PC Lovell “shocked, upset, and humiliated”.

Ms Kerr described the entire situation as distressing and “a heated moment”.

Grace Forbes, defending, said: “Nobody disputes the words that were said.

“But simple words, even words like these, do not make you guilty of a criminal offence.”

She added: “The words were a comment, however poorly expressed, about positions of power, about privilege, and how those things might colour perception.”