Strangely enough, a friend of mine hit a new shape 911 Turbo about 3 weeks ago in London, and the car had UAE number plates. Not a serious smash, he basically hit the rear end of the Porsche at about 2mph.
The driver of the 911 was cool about it all, they swapped insurance details (name/address etc) and no problems came up.
With regards to parking tickets etc, like Nozzer said, they won't get any, it'd be a nightmare trying to sort it out. Personally, i'd call that ********, no matter who you are who how much bling you have, you still obey the law and still pay the penalty.