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 capital's theatres also generate more searches than those in any other city, according to research by Google.
Union officials are expected to meet next week to plan further stoppages if talks fail to resolve the dispute.
Natalie Sharp and Christine Bicknell appeared in court over an alleged incident at a Lidl superstore in Wallington, south London.