Right i thought they sold it in the uk to. Commandant is a cleaner. Gets the rough layer off. With unipol you can polish the alu after. Works perfectly. No sanding needed cos you use Commandant for it. But don't know if they have it for sale in the uk tho. Unipol is like 28euro for a liter. And commandant 14euro or something.

Just wash the wheels. Get all the dirt and sand off and get busy with Commandant. After that you polish it with unipol and ...well youve seen the pics. Those wheels didnt got a cleaning for 6 months. On the pics i took about 1 hour per wheel.By hand. using a drill speeds up the proces tho