The wheel specialist is the best. Not cheapest but if you care about your wheels you won't mind. 100% recommend Fareham branch.
There are others that know more about wheels and correct finishing techniques that have been doing it for longer without being a franchise.
TWS have a very successful global image developed by good marketing of the franchise opportunities.
It's also worth noting that the Fareham branch at least have a very high staff attrition rate.
I have also witnessed one of their staff dropping one of my wheels onto the caliper as he removed it. He had to do this because the spigot aperture had been powder coated and had become firmly stuck on the hub. He took all of the wheel bolts out rather than leaving two in to stop the wheel falling off when he hit the back of the wheel. TWS accepted that they had 'training issues'.
These surfaces including hub face and bolt seats should not be powder coated. Have you read my earlier post in this thread with a link to another older thread?
Paying good money does not necessarily ensure quality. One of the things with this kind of work is that the change is so dramatic that the customer is usually very impressed as a result of this and then becomes happy to pay. As far as a standard finish is concerned with the right equipment it's not particularly labour intensive and a good finish can be very quick to achieve.
I'd also suggest basing an opinion on a company based on how they deal with a complaint rather than on a success, or at least be open minded enough to consider this. Then you will have revealed a true measure of the integrity of the trader and their regard for the customer. Too many people wax lyrical about traders/dealers etc when they've had no reason to rely on customer care or experience the need for decent after sales service. TWS have a massive customer base both privately and commercially and have marketed very successfully. They do not care if they lose a handful of customers.