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
He is the first professional rugby union player to do so - and told ITV News he hopes he can be an inspiration to young people.
An inquest into the death of a 14-year-old cadet heard how his teammates tried to radio for help in his final moments.
Ecuadorian officials considered a number of plans to smuggle the Wikileaks editor-in-chief out of their embassy in London.