Everytime a new LH route is announced at Lgw, the first re-action is always"how long before they are off to LHr". We are told tha Lhr is full and it seems that it will be 15+ years before there is a new runway there, if ever. Before then two things are going to happen. 1. The economy will start improving. 2. Airlines will want to keep expanding, both current airlines and new ones to the UK. With that in mind, at some point new entrants to Lgw will have to stay there, they will not be able to get into Lhr even if they want. So over time, the number of new long and mid haul routes at Lgw will increase and they will stay there. At least, that is the way I see it.
TB