Heathrow's the UK's world gateway, so no, I can't imagine this happening, so let's stop being silly. You always take this personally as some sort of affront, as if not being designated a red country gateway is even going to be remembered in six months time.
As for Emirates and the A380, all UK flights are cargo inbound and passengers/cargo returning, loads are not close to filling the A380 but the fleet is being brought back to life as they're running the B77W fleet hard.