La Voz de Galicia reports today that ClickAir are considering a new connection between Vigo and one of the airports in London. Earlier this week, Ryanair also announced a new route from Santiago to Reus (Barcelona).
The article in La Voz mentions that Clickair are considering 3-5 weekly flights to either Luton or Gatwick (Heathrow seems to be out of the picture). None of this is official yet, but hopefully before the summer this route will be up and running.
This might be a good option for those planning to walk the Camino Portuguese.