I'm starting to get the feeling that Ryanair and Easy at their London bases are becoming a bit complacent; apparently a notably high proportion of their profits comes from there, as opposed to the less dense routes across other European points, and they seem to be allowing the likes of Norwegian at Gatwick and Jet2 at Stansted (and even Wizz at Luton) to come in and start picking off markets they have developed.
Easy gave up Gatwick to Moscow while Aeroflot moved even more onto widebody A330s on their London route - maybe Easy were just too believing about Foreign Office anti-Russian hyperbole. For Ryanair, I'm still hacked that they abandoned Stansted to Tampere, Finland's second city, where we were regular users, and so are a fair number of Finns as well.