Some twat at my work recently scraped the front wing of his Citroen 2CV (yes I did say 2CV!) on my rear bumper as he reversed out of the parking space next to mine. Needless to say he denied it even though his front wing had black paint on it at exactly the same height as the new scrape on my bumper. Anyway my boss agreed to pay for the damage. I went to Dentex a company in Southampton that I have used before for another dent that my Dad did to my car last year. I got the guy to quote for a chip in the rear wing and a very slight dent in the passenger door as well (all of which he put down on the receipt as the bumper damage so my boss would pay for the lot!). Total price £130. Fantastic job all done in a day. Definitely recommend them. I think there may be franchises all over the country.