I'm a window cleaner, but used to be a valeter.
I much prefer doing cars, but couldn't rely on steady customers like window cleaning.
I worked at a few main dealers, and was trained on-site by Autoglym themselves.
Absolutley brilliant, they give you tips you'd never have thought of.
I was doing cars for the Motor Show at the NEC soon after.
It doesn't get higher standard than that....
I'd imagine Autoglym would train a sole trader though, give them a ring - should be easy to find.
To be honest, it's pretty hard to ruin a car once you know all the ways to correct things.
If you need any help with anything else, I'll try to help.
I'll keep an eye on this thread.
Cheers, Rog.