Now don't laugh, but Halfords do dent and scratch repairs and as I recently had chance to find out, they do a really good job. I had a rash on my car from another car/4x4 reversing into it and the repair is brilliant!
The company they use is call "Shine!"
When you go to Halfords they have a guage for determining the price and then you simply pay and they come out and do the repair for you. I was a bit reticent about paying up front, but I wasn't to worry as the guy who did the repair had been doing it for over 20 years
