Recommendations for bodywork repair

[PorcupineTree]

I was driving home from work when some debris came off an HGV on the other side of a rural road (40 limit) as we went round a bend.

It looked in the poor light like a piece of cardboard or wood but given the damage I found when I came home, I suspect the latter.

Anyway, it struck my bonnet and there's now a nasty dent, chip and some scuff marks. I can't see any other damage but is there anything I should check for?

And lastly, not really having had cause to use a body shop before, does anyone have any recommendations? I spoke to the insurer and they said it wasn't worth claiming unless it's going to be £400-£500 or more, so I'm currently looking to just get some quotes. I'm guessing a main dealership or indie garage isn't going to do bodywork repairs?