Regulations set forth by the Vehicle and Operator Services Agency under the Road Vehicles (Construction and Use) Regulations 1986 provide that all front car windows in front of the B post can have no less than 70 percent VLT [Visible Light Transmition]. Windscreens are only allowed tinting outside the sweep of the windscreen wipers to a maximum of six inches from the top of the windscreen. [This information is the subject of changes by future regulations and different law in foreign countries] (Please read this before contacting PremierTinting)