An aerial image of the Olympic Park, with the Olympic Stadium and the Aquatics Centre in the foregroundOlympic Delivery Authority Chairman John Armitt said: 'This year is the toughest in terms of construction and we are at our busiest. We will enter 2011 with the confidence that more than three quarters of the construction project is complete and that all milestones to date have been achieved.
'We remain on schedule and within budget, but are not complacent about the challenge that lies ahead.'
View the latest aerial images of the Olympic Park









