”  “Home owners living under flight paths “wouldn’t even hear the aircraft” after a while, the outspoken airline chief suggested.”

I suggest the gentleman purchases a house in Ealing or Acton or one of the other boroughs near LHR. He should use that when in London.

Soon he will discover the impossibility of holding any conversation during summer in the back garden. At regular and short intervals talk is drowned out as jetliners pass overhead climbing through10,000 feet. It will be little use going out to, say, Lammas Park, as the same noise effect will swamp you.