Solvol Autosol.
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Won't the wire wool cause a load of faint scratches rather than polish?I use Autoglym metal polish with some wire wool, brings them up quite nicely.
Ben.

Meguiar's NXT All Metal Polysh with a cloth. Don't even need to rub hard, comes up a treat (I'm sure there is some double meaning in there)
Solvol Autosol.