Dont know why everyone panics about window tints. Most the time when the old bill are driving the opposite direction they wouldn't get a chance to turn round to follow anyway. And if they are parked up, you might have enough time to put them down if you spot them in time, if not, 9/10 they dont bother and if they do, just put your windows down before they pull you over and when asked, tell them you dont have any. Job done!