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Aerials show central London gridlocked by black cab demo

11 June 2014 Last updated at 15:06 BST

A protest against a mobile phone app by London's taxi drivers has brought large parts of the centre of the capital to a standstill.

Aerial footage shows the gridlock caused by black cab drivers unhappy at rival Uber, which they claim is not regulated well enough.

Jane Hill and Daniel Boettcher report.

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