It's almost 50 years since the Government recommended a new airport be built for London and the South East. Two years ago, it seemed that the argument had been settled when a Government-backed Commission said Heathrow should get a new runway - to cope with the huge demand for flights.
People living near Gatwick felt they could breathe easy when that recommendation was made. But once again the spectre of more noise pollution in Sussex and west Kent reared its head.
It comes as a new study has revealed that Gatwick would ultimately be better for the national economy - and less damaging to the environment. Our Political Correspondent Phil Hornby had been following the latest developments.