As is most "recycling". Cardboard seems to be recycled pretty thoroughly, so I've no objection to paper/cardboard recycling since it's fairly simple. Cans should also be recycled but I'm less sure that councils treat them appropriately. The market is flooded with cullet so "recycling" glass seems a complete waste of time. Firstly it's not much of an environmental hazard. All Flesh is Grass, All Sand is Glass. Secondly the major use for it nowadays seems to be as hardcore.
I had been fairly careful at work to use the bin marked for PET and drinks cans since there seemed to be a fair chance these would b recycled. Then I spotted the cleaner emptying both containers into the same waste skip.