I use Isopropyl alchohol, which I am lucky enough to get in pure bottled form from my local old fashioned style chemist
Maplins however I think do sell the stuff in a can.
I use Isoprphyl alchohol too, 91% (Best i can get at Wal mart ) mainly because it is so cheap (96 cents a bottle), and is relatively docile compared to other solvents. It works good for me. I've found that the 70% doesn't work very well, so I suggest staying away from it.