More than a quarter million British children have been accused of racism since the country passed its Race Relations Act in 2000, the Daily Mail reports.

Munira Mirza, a senior adviser to London Mayor Boris Johnson, says teachers are being forced to report children as young as 3 years old to the authorities for using alleged "racist" language.

"Teachers are now required to report incidents of racist abuse among children as young as three to local authorities, resulting in a massive increase of cases and reinforcing the perception that we need an army of experts to manage race relations from cradle to grave," she wrote in Prospect magazine.

According to civil liberties group the Manifesto Club, 280,00 incidents have been reported between 2002-2009.