A dored - Car Dooring, Being Doored, "Given the Door"

Nope, it was the passenger. He said he was getting out but then didn't and stayed in the car. The guys did it for a laugh, you could tell by the smirk on their faces while I was 'having words'...

Well, that's assault. You could have been seriously injured through his action. It may be too late to make a report now, but don't blame yourself--in the first rush of adrenaline, it is very hard to think straight, and the pain is usually masked, making it very difficult to assess yourself. A friend of mine once nearly had his ear sliced off on an aerial, but didn't notice until the guilty cab driver pointed out to him that he was bleeding profusely. Good luck if you do choose to pursue it, and yes, definitely get a good solicitor in that case.