I have seen reports that the artificial cap imposed on daily pax numbers using LHR has resulted in some demand being displaced to alternative departure airports nearby. The Emirates departures from STN and LGW (amongst others) would be temporarily boosted by this. But the question becomes what load factors will be sustainable once LHR is again permitted to accommodate "normal" levels of demand? What is the underlying load factor from STN on a long-term view? That is the number which will determine capacity planning for the route going forward.