For many years now, London Heathrow (LHR) has been the largest and busiest airport in theUnited Kingdom, as well as one of the leading international hubs in Europe. However, with only two runways at its disposal, aircraft movements (and, therefore, passenger traffic) have to be capped at certain levels, leading to intense competition for slots at the West London hub. In order to alleviate this pressure, a third runway has been proposed.