i don't know if this is of interest but i was considering a franchise with these people
http://www.colour-wizard.com/
the only thing that put me off was the initial investment; as i had a safe job i didn't have the balls to take the risk, but there si some good money to be made in it; if you do your research.
i chose them over all the others as they offered both paint fixing and alloy wheel repair, if you do good work in one, people re book you for the other etc. instead of finding alternatives. spoke to the MD and he was very down to earth and not pushy, if i was being made redundent i'd definetly be going for a second look at it.
theu also do machine polishing etc, and he trains each new person himself as its his business reputation on the line, all the info is on their website, hope it helps