Rainboe,
it is already happening sadly--so many people we talk to in our line of work go to Schipol instead of using the london airports and go from there to their long haul destinations--LGW does need another runway badly-such a shame they will have to take a good bit of Charlwood out to do it--my fave place to move to!!!
atc etc cope so well at LGW -was up there in the week for about 2 hrs-but another runway is def needed and lots more flights can be handled--more for me to watch then as well!!!!!!!