For the last who knows how long, aircraft have been holding for Heathrow 0600 arrival having known the second they turned the keys on the ramp in whichever US airport exactly when they would arrive and theoretically land. Has this resulted in them arriving at an appropriate time for the curfew, let alone the relative to the other 30 inbounds wanting to land first? No. Perhaps the airlines need to agree amongst themselves a landing order, let the aircraft know, and fly appropriately. Then we really all could just sit back and 'monitor' the situation, presuming there's only one airport in the vicinity naturally. I'll be off then of course. The chances of being able to usefully intervene having been just 'monitoring' for the last thousand hours are not appealing.