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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The operation carried out by Westminster City Council led to the seizure of £8,000 worth of cigarettes.
Armed troops have been stationed around Parliament to free up armed police to patrol the streets in the wake of the Manchester bomb attack.
Chelsea had planned an open top bus tour to show off the Premier League trophy and hope to add the FA Cup in Saturday's final with Arsenal.