I did buy some solvent upvc cleaner and it smelt like nail varnish remover so i thought i would try some nail varnish remover and it works just aswell.
And better than cream upvc cleaner.
Paul
Be careful with nail varnish/remover paul, it contains Cellulose and celllulose can melt UPVC,
I did a post some time back about using cellulose on upvc, it does an excellent Job, but as soon as youu apply it, you must quickly wipe it off, with a clean dry cloth or kitchen towl.
It will also get rid of all your fly poo.