Heathrow Airport Ltd was one of two preferred bidders to run the third runway

The government is poised to plough ahead with a controversial £49bn plan to build a third runway over the M25 proposed by the owner of Heathrow airport, despite warnings from airline bosses that it will make the hub more expensive and the construction process considerably more complicated .

Transport secretary Heidi Alexander will confirm the decision to proceed with the proposal from Heathrow Airport Limited (HAL) over an alternative plan submitted by hotel tycoon Surinder Arora later today, according to the Financial Times.

City AM understands the update, which is also expected to reveal an overhaul of the Civil Aviation Authority rulebook for the expansion, will stop short of fully confirming HAL as the

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