I don't know if you can get it over there DJ but Eucalyptus oil gets them off. Also you used to be able to buy a product in the chemist called Zoff.
I use some stuff called "dissolveit" for any sticky residue on jars etc. [/quoteAstarra,Where do you get that from ? My kids stuck some police stickers all over a glass sliding door and we've been struggling to get it off. This might work !