Robotaxis are on the roads of London, marking Uber's biggest real-world challenge yet in a busy city built on a dense layout and countless roundabouts.

Uber and Wayve are launching a robotaxi service in London on Thursday, marking the city's first self-driving taxi service

London is launching its first self-driving taxi service with Uber and Wayve. These electric vehicles will initially have human safety drivers present. The service operates under…