I can highly recommend dentmaster, someone kicked my drivers door and they managed to sort it out for me took them 2 hours but they did it. My mate just happens to work for them as well.
A little tip:- When you phone up the main number they will give you the mobile number of your local chappy. Phone him at 5 o clock as he will normaly be thinking bout going home, he will need to look at the dent to price the job which by now will be out of hours, you will 9/10 get it done cash in hand on the spot seeing as he is already there and sees a opportunity to earn some beer tokens.
Scott