Boris Johnson
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London Mayor Boris Johnson says cycle superhighways here to stay

13 November 2013 Last updated at 19:48 GMT

London Mayor Boris Johnson has said "one death is one too many" after a woman became the fourth cyclist to be killed on the city's roads in eight days.

The woman was killed in a crash with a lorry at Bow Roundabout at 08:45 GMT, the third fatality there since 2011.

Speaking to BBC London's Tim Donovan Mr Johnson said he is committed to improving safety for cyclists but said the cycle superhighways will remain.