Boris Johnson calls for mini-Knowledge for Uber drivers

Mayor speaks out in defence of black cab drivers, and says Transport for London are consulting on language and geography tests for minicab firms

Boris Johnson, the mayor of London, has suggested that Uber drivers should have to pass language and geography tests before being allowed to operate in the city.

Speaking at his last ever State of London debate, Johnson came to the defence of black cab drivers, who have been locked in a rivalry with cab app Uber since the firm came to the UK.