By Daniel Hunter
Heathrow Airport will reveal details of its plan for a third runway later amid fears that the UK is at risk of "dropping out of the premier league" of airport hubs.
The airport will submit its proposal to the Davies Commission, set up by the government to look at raising capacity.
Colin Matthews, Heathrow chief executive, believes unless a third runway is added then the UK is at risk of "dropping out of the premier league" of airport hubs.
But environmentalists criticised the plan - and London Mayor Boris Johnson said thinking Heathrow could be the major hub London needed was "crackers".
"If the UK does not want to be left behind by its foreign rivals, it must have the connectivity to compete and trade on the world stage," Mr Matthews said.
"That connectivity can only come from a single hub airport in the right place for taxpayers, passengers and business.
"Only Heathrow can meet all these demands."
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