Chelsea striker Sam Kerr has denied that calling a police officer “white” was used as an insult as she was cross-examined during her trial in London on a charge of racially aggravated harassment.

Australia women's soccer captain Sam Kerr said she felt British police treated her differently because of the colour of her skin, as she gave evidence in a London court on Wednesday while on trial accused of racially abusing a white police officer.

Australia women's soccer captain Sam Kerr went on trial in a London court on Monday, accused of racially abusing a white police officer after a drunken dispute with a cab driver.

A police officer said he felt "belittled and upset" following an incident involving Chelsea forward Sam Kerr, but insisted he "didn't make something up to get a charge over the line," a court heard on Tuesday.

The police officer at the centre of Sam Kerr’s trial has denied changing his statement to get a criminal charge over the line, a court has heard.

Chelsea forward Sam Kerr testified that police treated her differently because of "the color of my skin,” a court heard Wednesday during the Australia star's trial on a charge of racially aggravated harassment on a police officer.