There was a gem in that twitter discussion:
Manchester Airport @manairport 5h5 hours ago
@LPL_Airport But let's just keep it between us, @HeathrowAirport gets grumpy if we mention the #NorthernPowerhouse...
Liverpool Airport @LPL_Airport 5h5 hours ago
@manairport @HeathrowAirport to be fair the #NorthernPowerhouse is hard to ignore...