Sir Peter Hendy, the head of Transport for London, said that the success of the Olympics showed that it was possible to take some space away from traffic without causing gridlock.
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The mayoral candidate said he believed the spike in knife crime and the restrictions imposed on police to stop and search are linked.
Dragos Moisica raped the victim on her 12th birthday in a hotel in Kenton. He has been jailed for 12 years.
A week after the sinkhole appeared, it is unclear when the area will be declared safe.