Operation Podium has been set up to protect the Olympics from organsied crime, such as ticket touting. Detective Superintendent Nick Downing explains:
More top news
Delay your journey until after 7pm, says the AA.
One of the victims, a 52-year-old man, was hit so hard his heart stopped beating.
Twins Laviai and Lina Nielson were so inspired by volunteering at London 2012, that their ambition ever since has been to compete at Rio.