Having lived in Central London - where (God forbid) you can hear aircraft noise, Feltham (where you can't avoid it - especially that pesky Concorde) and Egham, nicely under the flightpath just out of Heathrow, all I can say is if you don't like it - MOVE.
Anyway, these campaigners should try living near to an operational RAF or USAF base - an F1-11 with afterburners lit vs a nice little A300...I know which one I'd rather listen to...
Idiots the lot of them!