A report out today claims that replacing Heathrow with a new hub airport would leave passengers, taxpayers and business worse off. It says a third London airport runway is essential if capacity is to be increased.
The study will be presented as evidence to the Airports Commission and argues against a new airport in the Thames Estuary, Isle of Grain or Stansted.
Earlier we spoke to John Holland-Kay, development Director at Heathrow.
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Philippa has the weekend weather for the east
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Landmarks across the south will switch off their lights for an hour tonight as part of action on climate change.