United Cabbies International , representing London 's black cab drivers , has challenged a decision made last year that granted Uber a 15-month probationary licence . The group claimed in court that the decision by Judge Emma Arbuthnot was based on " unsatisfactory reasoning " and was bias . The cabbies are using a legal process known as a judicial review, which is a challenge to the way a decision has been made rather than the rights and wrongs of the conclusion itself. Uber said the bias claim is weak because Arbuthnot was not aware at the time of the decision that her husband worked for a firm advising Uber investor Qatar Investment Authority .
United Cabbies International , representing London 's black cab drivers , has challenged a decision made last year that granted Uber a 15-month probationary licence . The group claimed in court that the decision by Judge Emma Arbuthnot was based on " unsatisfactory reasoning " and was bias . Uber said the bias claim is weak because Arbuthnot was not aware at the time of the decision that her husband worked for a firm advising Uber investor Qatar Investment Authority .