Does anyone know a good place for fixing/refurbishing an alloy wheel in the Redditch/Bromsgrove/Stratford area?

One of my wheels on the mini has a slow leak between the rim and the tyre. I've pretty much put up with it for the better part if 2 years now and just kept a pump inside the front door and topped up the air every few days, but getting pretty fed up of it now.

Based on what a few people have recommended, I think the wheel just needs regrinding so the tyre makes a better wheel.

Any garages worth trying?

might be cheaper to buy a spare single wheel from ebay?

Very few around. Pretty much none really. They tend to sell in full sets of four or not at all. 

new alloy is £100.