bbc news It looks as though National Express are going to buy Alsa (although some reports describe it as a merger)
I hope this will not worsen the Spanish service. I've always been impressed by the spanish bus network. The buses are generally cleaner and more comfortable than their British counterparts. Nearly always you get music channels and a film to watch on the longer journeys too.
One thing Nat Express may introduce is the cheap ticket in the Jan-March season. In the UK they often advertise "go anywhere for £12" at this time, which is very cheap for the UK.