The long road to becoming a London Black Cab driver For two years, Patric McGuinness has been studying London's 25,000 streets and 20,000 landmarks. The aim: to qualify to become a London Black Cab Driver. It's a profession increasingly threatened by the rise of Uber, which has just won a High Court ruling that the smartphone app does not infringe a law on the use of taximeters to calculate fares. A voiced AFPTV report