London Tonight has reported on complaints about progress in restoring London 2012 venue Greenwich Park to how it was before the Games.
Greenwich Park hosted equestrian events during the Olympics and Paralympics.
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Council leaders today called on the government to provide extra money to help resettle the youngsters in the capital.
An eyewitness said: "It was very unnerving. It was just after 12pm and there were suddenly police vans and cars everywhere."