The only regular use of mixed mode is between 6am and 7am daily, the busiest hour for arrivals into the airport ... just because Heathrow could physically land 15 per cent more planes, doesn’t mean ...

UK air navigation service NATS has implemented a new arrival separation technique ... limited a time as possible,” says London Heathrow head of airport operations Kelly Stone.

Intuitively, you might imagine that the most efficient way to operate a two-runway airport like Heathrow is to separate arrivals and departures ... is the terminal and gate space to handle ...