I have a 1996 GS300 sport. The 18"alloys are well scuffed.
Does anyone have any tips that don't involve spending £1000?

Your near Gillingham right ?

Have you heard of Lepsons they did my 4 for £200,powder coated/polished.

Look like this when finished..

yep good company couple of my mates have used them ,were are you in medway i am in walderslade they are about ten minutes from me ,i think they offer a mobile service now as well