I've used Lepsons in Gillingham. I can't sing thier praises high enough.
I also have a Capri, (No laughing), and I got hold of a set of 7.5" RS alloys. (Genuine rocking horse poo!). These wheels had been left outside in a field for about 7 years. They looked disgusting. Whenever you picked one up, it left a grey/green powder on your hands.
Anyway, I took them to Lepsons and the chap kept repeating how pitted they were and that he couldn't guarantee how they would finnish. I got the impresion he didn't really want to do them.
I collected them 3 days later and I was SOOOOO impressed.
I had a set of 5, they had acid dipped, sand blasted, painted the centre spokes and inside rims, polished the outer rims and laquered the entire wheel. - One wheel had been badly kirbed. They welded some new alloy in its place and you could barely see the join.
Total cost including refitting tyres £204 inc vat - They looked, and still do, brand new.
When I first enquired, they quoted me £35+vat per wheel. For what they had done, I could'nt have been more impressed.