The net will be covered with material next spring to provide the correct conditions for athletes on the field of play. It will cover two-thirds of spectators, inline with Olympic Stadiums at previous Games.

Olympic Delivery Authority chairman John Armitt said: "The successful lift of the Stadium’s cable-net roof is another milestone reached on the construction of this flagship venue. It has been a complex engineering and construction challenge, complicated by the wind and rain in recent weeks. We remain firmly on track and will lift the lighting towers into place early next year, taking the Stadium to its full height.

"We continue to make good progress across the project though there are still challenges ahead. The next year will be our toughest as the number of workers increases and activity on the Olympic Park reaches its peak, so we cannot afford any complacency."