Toner Cartridges - Lexmark
Lexmark have a cartridge collection program found at the below link for different sized businesses. It boils down to different sized boxes you store your empty cartridges in before arranging a collecton. If you're looking to recycle ink cartridges, each time you purchase a Lexmark original you will find freepost details included in the box!
Accepts: Ink cartridges, Toner cartridges, Printers