Sounds to me as though you would have no issue at all with your GCB Hayley. The minor damage that you describe would be deemed fair wear and tear. The assessment is made by the dealer who supplies your next car, so if you are worried you can always ask the sales person that you are dealing with to look the car over now. Some people have posted photos on here of what I would deem to be fairly significant accident damage, yet they have received their GCB. As I say, I don’t think you have anything to worry about.