The Olympic Park in Stratford has closed to visitors as the site is prepared for the start of the Games in a few weeks.
Watch Simon Harris' report here:
More top news
Six people have been injured and a man has been arrested after an alleged noxious substance attack in east London.
Save Your Uber in London was set up after it was announced the firm would not have its licence renewed when it expires next week.
Survivors are still traumatised, homeless and want answers.