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Is Window Tinting Legal in the UK?

UK tint law explained in plain English: legal VLT limits for front and rear windows, penalties, and how to stay compliant.

4 min read · Updated 2026

The legal limits

UK law regulates how much light must pass through the front glass, measured as Visible Light Transmission (VLT). Rear windows behind the driver are not restricted.

  • Windscreen: at least 75% VLT
  • Front side windows: at least 70% VLT (cars first used after 1 April 1985)
  • Rear side windows and rear screen: no legal limit

What happens if you are over the limit

Police can issue a prohibition notice requiring the film to be removed, along with a fixed penalty. An illegal tint can also complicate an insurance claim if the vehicle is not declared as modified.

Getting the benefits legally

Most people want tint for heat and UV, not darkness. Modern ceramic films reject a large share of infrared heat while staying within legal VLT, so you can tint the front legally and go darker only behind the driver.

How we fit it

GlossGo uses computer-cut templates for your exact model, checks VLT before fitting, and advises on the legal combination for your car before any film is applied.

Want it done for you?

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