In reference to Bradders suggestion about nail polish remover, and with no disrespect meant, be sure to use the NON ACETONE nail polish remover. If not, you could damage the surface of what you are trying to remove the paint from.
Here in the US there is a product that works very well for older more stubborn paint splashes called Oops. I have used it to remove old stubborn paint splashes from hardwood floors as well as many other surfaces. It also removes tar, chewing gum, etc. There are also soy and citrus based removers.
Newt