Over the past two-and-a-half years we have analysed, reviewed, consulted, debated, listened, reconsulted and done all those things commissions do. Our conclusion is clear. We favour a third, full-length runway at Heathrow, to the north-west of the existing runways. But it must be accompanied by a new way of working for the airport, with measures to cut noise and pollution and make it a better neighbour to its local communities.