Might be of use to those of you near Brum. Note the £20 per wheel is if you take them in without tyres fitted otherwise its an extra tenner to remove and refit the tyres.

http://www.citypowdercoaters.co.uk/#!20-wheel-deal/c92w

Never used them, and I guess you get what you pay for, but seems cheap to spruce up an old set of wheels.