Has it been put to my right hon. and learned Friend that to abandon most of the traffic distribution rules, as the Civil Aviation Authority recommends, would place much greater pressure on scarce slots at Heathrow? That inevitably raises questions of capacity at the airport. Is my right hon. and learned Friend aware that Miami international airport, whose runway configuration is similar to that of Heathrow, manages 120 movements an hour, compared with about 80 at Heathrow?