I always got mine done by john coulter in chilton, but his shop closed down and i couldnt find him when i got my last one, so had to go elsewhere, but him i would defo recommened john if you can find him. Another one is kev turner's aka mc techno t if you ever listened to north east rave lol. he has a place in durham, few mates have had them done by him, and they were very happy, here's his site.

http://www.steelpaintbrush.com/