That's a good question. Here is the way I would answer it. The multiplier effect that the airport generates every single day through driving flow is extraordinary. You think about the $36-billion contribution we deliver today. It's going to effectively double in the next 18 years. If we continue to add three million to five million passengers a year, the numbers are in the billions for growth. We have to decide whether we are going to stop it or not. I will tell you that, within Pearson specifically, for each major screening point—we have six—the opportunity cost of one minute of wait time is $2 million in sales that passengers would spend in the airport. That's foregone, and we've proven that number. Think about it. Within retail alone, it's multi-millions every single year.
On October 21st, 2016. See this statement in context.