CNN News:因存在安全问题 Uber在伦敦被吊销牌照

In the capital of the United Kingdom, Uber has lot its license. And if it loses its appeal, then Londoners and visitors will have to call a black cab, use the tube or find another ride-sharing service. Uber first had its license suspended in London in 2017. The city didn't like how the company responded to serious crimes and questions about its safety. But it's been given probation period since then, which allowed Uber to keep getting rides.
Now, though, Transport for London says it's identified a, quote, pattern of failures that have put passengers at risk, including thousands of trips that were given by unauthorized drivers, some of whom have been fired but faked being authorized ones. Uber says it's changed its business and is now, quote, "setting the standard on safety". It calls London's decision extraordinary and wrong.

You can still order an Uber there. The service is allowed to keep operating while the appeals process plays out. But there are concerns about the future of its 45,000 drivers in London if it permanently loses its license there.
There are also concerns about Uber's revenues. London makes up a significant part of those and the company is facing more competition there from other ride-sharing services.