Heathrow – the UK’s only hub airport – has been short of capacity for a decade and is currently operating at full capacity. We conclude that a third runway at Heathrow is necessary, but also suggest that a four-runway proposal may have merit, especially if expanding to locate two new runways westwards from the current site could curb the noise experienced by people affected under the flight path.
More top news
Tuesday's weather forecast with Simon Parkin
Monday night's weather with Simon Parkin
Monday afternoon's weather with Simon Parkin