The injured man was stabilized at the scene and then taken by road to a major trauma centre. His condition remains unknown at this time.
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The A11 High Road has been closed in both directions between Crownfield Road and Belton Road, causing significant disruptions. Bus routes towards Walthamstow and Stratford have been impacted, and traffic diversions are in place.
The Metropolitan Police have been contacted for further information, and the investigation is ongoing.
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