Yasmin Smith, who rushed to Bradley Wiggins' aid, has told Daybreak that the woman involved in the collision didn't realise who he was at first.
"She was even more upset when the police told her who she had hit," she said.
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Nearly 38,000 runners will hope to complete Sunday's London Marathon making it the biggest event in its 35-year history.
Rain across central Britain with longer, intense downpours with thunder in places this evening. A lucky few will stay sunny and dry.
Planning on going to the London Marathon tomorrow? Read our handy guide first!