Contractors have started work to dismantle the Olympic Equestrian arena at Greenwich Park.
But local people have questioned why the work to restore the park has taken so long.
But the London Olympic Committee says it is on track to hand back control of the area to The Royal Parks next month.
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Here is a timeline of some of the key events in the debate over expansion of airport capacity.
More than 700 households were today bracing themselves for a government decision which could see their homes bulldozed.