Sorry paul, but you sound like such a girl right now. these things happen everyday all around the uk and all around the world for that matter, get over it.
Looking to buy a land rover defender, saw a really good deal on eBay listed as being in Scotland, contacted seller who then texted me direct. (Amy@bmsapp.co,uk) Insistent that she delivers and also said she was in Northern Ireland for work.
All you need to do in the event of an accident is exchange reg numbers and insurance companies. Thats it. no phone numbers or anything. if you have a camera on your head recording the whole incident ask the other person if they are ok, if they say yes then that settles it. If its a very minor thing like this and you both agree to settle without getting insurance involved try to do it there and then and get a signed reciept. Never apologise as it implies responsibility.
If you suspect the driver was drunk; call the police, don't post it on the arse end of the internet.