The horn on my polo 1.4cl has stopped working any ideas how i can fix it?

thanks

Depends if the fault is in the wiring or the horn itself.

To rule out the wiring, disconnect the horn, and connect a multi-meter to the plug. Get an assistant to press the horn button, and see if you get any reading on the multi-meter. If you do, then it's the horn itself, so just replace it. They're less than a tenner from GSF etc.