This insane stat shows how Uber is taking over London

The logo of car-sharing service app Uber on a smartphone over a reserved lane for taxis in a street is seen in this photo illustration taken in Madrid on December 10, 2014. REUTERS/Sergio Perez/Files

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There are a lot of Uber's in London.

Mayor of London Boris Johnson dropped a pretty incredible statistic about the growth of Uber in London when he was asked about the ride-hailing app at the City Lab London conference on Monday.

Johnson said: "We need to let competition rip. However, the profusion of minicabs means that of the cars entering the congestion zone now, 1 in 10 are minicabs because of Uber. Two years ago it was about 1 in 100."

The congestion zone is the area of central London that drivers must pay to enter, an initiative meant to reduce traffic. Cars are monitored using a system of cameras, meaning its easy for the Mayor's office to track what type of vehicles are entering the city centre.Advertisement

Johnson added: "The number of minicabs on the streets has gone up from about 40,000 or 50,000 when I was elected to more than 80,000. That tells you that's going to cause congestion."

Official stats from regulator Transport for London and elsewhere show:

An Uber spokesperson told Business Insider that 4,500 Uber drivers are on London's roads at any one time.

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