London's Air Ambulance took the injured cyclist to hospital at around 6:30pm on Tuesday. The condition of the man, who is aged in his mid-20s, is described as serious but stable.
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The unlicensed events unfolded on Saturday night at Clapham Common and Tooting Bec Common.
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Jonty Bravery, who is mentally ill, has been jailed for 15 years after throwing a six year old boy from the Tate modern balcony.