99% Isopropyl alcohol will dissolve most adhesives and leaves no residue. Otherwise, acetone, as already suggested but I was under the impression acetone had been removed from nail varnish removers under EU regs? I stand to be corrected on that, but certainly the brand my wife uses is no longer acetone based.
Incidentally, isopropyl is unbelievably good for cleaning stainless steel in the kitchen. It literally just melts grease. Our cooker and extractor has never been so shiny. Only downside is, you really need to remember to open a window because it doesn't half give you a headache if you forget, like I did. lol.
£7 a litre is what I paid recently.
