Gordon Brown warns of soaring Olympic construction costs

Gordon Brown has warned Olympic organisers over the rising cost of construction. Despite already raising the budget for the 2012 games from £2.375bn to £9.3bn, Brown is insisting Olympic organisers keep a tighter grip on spending.

Speaking at a Downing Street reception Brown said: "The major challenge to the organisers going forward will be to control construction costs. They are rising particularly in London where you have a high number of capital projects."

A report written by the International Olympic Committee which will be presented to Olympic chiefs says London is making good progress. Using a traffic light system to rate the progress of Olympic development the IOC gave the green light to all but five or about 350 categories.