LONDON - APRIL 28 : St John Ambulance aiders, bicycles allow to move more quickly through crowds with medical equipment, at THE BIG RIDE, London Cycling Campaign, on April 28, 2012, London, UK.
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LONDON - APRIL 28 : St John Ambulance aiders, bicycles allow to move more quickly through crowds with medical equipment, at THE BIG RIDE, London Cycling Campaign, on April 28, 2012, London, UK.