The front windscreen must let at least 75% of light through and the front side windows must let at least 70% of light through.

Front windshield and front side windows may have up to 75% and 70% light transmission respectively, and all windows to the back of the driver can have any tint darkness levels. In case you're driving a vehicle which was first used before 1985, windshield may be tinted with 70% light transmission.

What does 70% windshield tint look like? 70% tint for the most part is unnoticeable once installed. If compared side by side to a non-tinted window, you can then tell the difference, but on it's own it appears clear. 70% tint often a have a bluish hue to them.

Motor Vehicles first used on or after 1 April 1985: The light transmitted through the windscreen must be at least 75%. The front side windows must allow at least 70% of light to be transmitted through them. Please download the VOSA Guide to tinted windows for more information.