I want some nice tints on my car. Tasteful, mind! Not American limo black, but a bit discreet. I've heard that too dark windows can land you in trouble with the police. Anyone any views / know the law? I know there are some traffic chaps out there...........

 

Rear windows can be as black as you like, fronts can't be above 30% tint (from memory)
My last tint was done by pentagon who were absolutely superb and would only do what is legal.