There is a place in Westgate on Sea called Body & Wheels. 01843 834982.
They charged £50 per wheel for a full strip and powder coat refurb a few months ago, and several of my mates locally in the trade use them regularly. You can leave the car with them and pick up two days later fully refurbed at about half what Lepsons charge. I have also used Lepsons Gillingham for my AMG wheels, who offer excellent service albeit at double the price.