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London's Air Ambulance marks 25 years in the sky

9 January 2014 Last updated at 21:47 GMT

London's Air Ambulance took to the skies 25 years ago and their control operators now take 5,000 calls every 24 hours.

They're now trying to raise enough money for a second helicopter.

BBC London reporter Tarah Welsh has been up with the team over the capital.

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