We can't rule out, nor wouldn't put it pass LCA to try to extend their flight operation times in the future, in fact if they ever got to their dream of 176,000 flights a year - we'd be confident in placing a bet that the next stage for them after that would be to submit a 'quiet application' to LB Newham, who would then in turn do their very best not to inform more than about 10% of residents affected.
Speak up against LCA expansion, but also spare a thought for those residents around East Midlands Airport and sign their petitition asking for a curb on night flights - something which is clearly not an unreasonable request so that they can all get a peaceful nights sleep. Good sleep is essential for the healthy development of babies and children and for healthy adults - our communities are valuable.
http://petitions.pm.gov.uk/peacefulnight/