German-based cab-hailing company MyTaxi has launched in London today, after it merged with UK cab-hailing app Hailo last year, reports City AM. According to MyTaxi, the app has already moved more than 17,000 drivers who previously used the Hailo system to the MyTaxi app and plans to start expanding further in the UK this week. The app plans to compete with Uber. However, unlike Uber, MyTaxi and other taxi-hailing apps are intrinsically limited in the number of drivers they can deploy in a given city, since they use licensed cab drivers to fill demand.