Uber has urged its 3.5 million customers in the capital to sign it and also promised to "immediately" launch an appeal.
It was banned in New Delhi, India, after a driver was accused of raping a female passenger, but the decision was later overturned. The agency said Uber hasn't met these standards.
US Commerce Secretary Wilbur Ross said the decision by London transport authorities to oust US ride-hailing firm Uber is "not really justified".
London's municipal transport authority took commuters by surprise Friday when it rejected Uber's application for a new license to operate, ruling that the ride-sharing company is not a "fit and proper" private auto hire operator.
Uber can operate for 21 days while the appeal process takes place, but can still operate for now.
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The 20-year-old Hameed had to fly home early from England's tour of India late last year for an operation on a broken left hand.
Uber was licensed as a private hire company in London in 2012 and has since grown rapidly - posing a challenge to the capital's traditional black cabs - but it has been caught up in the backlash against the so-called gig economy.
And with Uber's licence in Liverpool not due for renewal until 2021, TfL's decision is unlikely to have any impact on people using the app here. "Pls work w/us to make things right", Khosrowshahi wrote.
Uber has turned to customers to help defend itself in other battles around the world, and an online petition to support Uber in London gathered almost 430,000 signatures by early Saturday.
Post-Kalanick woesThe loss of the San Francisco-based start-up's licence comes after a tumultuous few months that led to former CEO and co-founder Travis Kalanick being forced out.
The company has already been forced to leave several countries, including Denmark and Hungary, and has faced regulatory battles in multiple U.S. states and countries around the world.
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Boinnet also warned against blocking of major roads in protest against or for the Supreme Court . About 1,200 people were killed in the violence that followed.
London's transport authority has revoked the license for taxi app Uber to operate in the British capital, and Londoners are freaking out.
Those millions of residents who use the service, which is in most instances considerably cheaper than hiring one of London's famous black cabs, are not happy about the decision.
A union representing Uber drivers said its members face going bust as they rely on money from fares to pay for their cars.
The campaign on the website Change.org asks London Mayor Sadiq Khan to reverse Transport for London's Friday decision, and is being promoted on the company's app in London.
He went on: "Providing an innovative service must not be at the expense of customer safety and security".
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In the first semifinal, Pavlyuchenkova admitted to thinking she had lost the match when she was down 3-0 in the final set. Pavlyuchenkova rallied from being down 3-0 in the final set to beat former No. 1 Angelique Kerber 6-0, 6-7 (4), 6-4.