AS levels aren't really gone. I'm about to sit mine now and the only difference I can gather between me and an AS student three years ago is that their AS counted towards 40% of the final grade and now they mean nothing in terms of what you come out with at A Level. You can now get a C in first year and an A* in second year. The exams exist as AS is the only real true indicator of what you're likely to achieve in second year.
As for the OP, I doubt they really do. People who still like to flaunt their grades from GCSE in AS don't seem to come off very impressive with classmates. Socially no, they don't matter. Everyone cares about AS and A Levels. But if you're hoping for a job at 16/17 and you have no other formal qualifications they can come in useful there.