Just moved to a new house with concrete worktops which are chipped here and there and quite badly stained in places. I think they are supposed to have some kind of finish on them (from digging around on the web) but I'm not sure what. And if I can fill in the chipped bits myself. Basically what I want to know is if there is a way to return them to their (presumed) former glory which isn't going to cost me £££.
TIA