Hundreds of motorists have had their driving licence revoked after failing roadside eye tests under new police powers, figures have shown.
In 2011 Cassie McCord, 16, died from serious head injuries when 87-year-old Colin Horsfall lost control of his vehicle in Colchester, Essex. It later emerged he had failed a police eyesight test days earlier but a legal loophole had meant he was allowed to continue driving.