After this morning's shock at Transport for London's (TfL) decision over Uber's licence, Londoners have got to work, with a petition to keep the service on gaining almost 35,000 signatures in just a few hours.
This morning TfL said it will not renew Uber's private hire operator licence, adding that the ride-hailing app is "not fit and proper to hold a private licence".
But today Uber hit back. In an email to customers, it urged customers to sign a petition in its support, saying:
"We are sure Londoners will be as astounded as we are by this decision. By trying to ban the app from the capital, the Mayor and Transport for London have caved in to a small number of people who want to restrict consumer choice," it said.
"Not only will this decision deprive you of the choice of a convenient way of getting about town, it will also put more than 40,000 licensed drivers who rely on our app out of work."
TfL cited factors including Uber's approach to reporting serious criminal offences, its approach to how medical certificates are obtained and its approach to DBS checks as reasons behind this morning's ruling.
It also raised the company's so-called Greyball technology, which it has been accused of using to avoid regulators and prevent officials from undertaking law enforcement duties.
Tom Elvidge, Uber's London boss, pointed out the move will affect 3.5m people.
"To defend the livelihoods of all those drivers, and the consumer choice of millions of Londoners who use our app, we intend to immediately challenge this in the courts," he said.