Bluedolphine - I think you should use the Pace MT/Sky story as a warning.Pace developed the Sky+ box, they were the first supplier then Sky decided that other set top box suppliers should be able to supply Sky.You see it may look all good but NU will i am sure allow a little healthy competition for their own sakes.
If Pay as you go fails then what then?
I still believe Tomtom is going to dominate.It is the Ebay,Google and Amazon of the SatNav world.They just keep going from strength to strength.