True cost of Heathrow third runway must be revealed, say MPs

Critics say a third runway at London Heathrow would put spending on other projects at risk.The true cost to the public of building a third runway at Heathrow has not been spelled out to taxpayers, according to a cross-party group of MPs, who warn that domestic flight connections and other transport spending will be jeopardised.In a letter to the Guardian, MPs and councils around Heathrow warn that promised domestic flight connections would only work with state subsidies that could not be guarant