Do they exist? Have lived in North and West London and everywhere we go, we hear planes. DD (3yo) says at night she opens her eyes every time one flies over and closes them once they've passed. I don't want this to be normal for her!
I've looked at the flight path maps that Heathrow publishes and it looks like every area we'd consider is in the flight path. Seriously considering looking outside London now, if we could find a nice community within commuting distance.
The whole "you get used to it" approach doesn't work for us, btw, It's been several years and we still notice planes that no one else seems to hear. Blessed with extra good hearing, I suppose! But I'd rather hear owls.