That's why TfL has clear guidelines in place, especially for vehicles operating as taxis or private hire services under the PCO scheme. When you apply for a PCO vehicle licence in East London, your vehicle undergoes a thorough inspection. Failure to meet tinting guidelines is a common reason for rejection. https://pco-licence-east-london.blogspot.com/2025/04/window-tinting-guidelines-for-pco.html