Delays to a decision on London's airport expansion are a "failure of leadership", the CBI business lobby group has told the BBC.
Carolyn Fairbairn, the director-general of the CBI, said: "We need this decision to be taken quickly."
David Cameron had promised a decision by the end of the year on whether to build a new runway at Heathrow.
However, on Monday BBC business editor Kamal Ahmed said the decision could be delayed "for at least six months".
