London Mayor Boris Johnson: "This is a problem that really needs a rapid solution. What it will mean is that everybody goes into the 2015 election with this Heathrow third runway still on the table, still a potential solution and I don't think that's sensible.
"I think it will cause real convulsions in west London, in all parts of London really because the third runway will bring a dramatic deterioration in the quality of life of hundreds of thousands of people around the city."
All options for airport expansion are "back on the table", the man charged by the Government with recommending future aviation policy said.
Sir Howard Davies, who has been charged with interring the issue of airport expansion in the south east, has outlined his role.