I saw a few in the past. Normally up Histon Rd, anywhere between the parade of shops and the top end near where the old Texaco garage was. Cant remember when i last saw one there... probably a 7 or 8 years ago I guess. There was one who i saw a few times, didnt seem like one of your normal street ones and then she went onto AW. Used to love the thrill of the streets!