Surprised the mods haven't moved this thread by now.
Originally Posted by
055166k
At least 10% unused capacity at Heathrow.......simulations prove it. Too many local restrictions on airport operation limit potential.
I don't think anybody disputes that measures like permanent mixed mode and relaxing/removing the night quota would increase capacity, it's hardly rocket science.
But the likely political fallout from those, measured on the "aggro vs benefit" scale, is the reason they aren't going to happen in the foreseeable future.