I dropped my car off at this place tonight, so that they can add a darker tint the rear side and rear windows. A neighbour recommended the company,and having seen the job the guy did on my neighbour's car, I have high expectations of a very good result. I liked the fact that instead of asking me how dark I wanted them to be, the first question he asked me was why I wanted them tinted, and what I hoped to achieve. I explained that aesthetics were less important than function - what I wanted was to reduce the amount of UV light & glare for rear seat occupants - then he recommended the amount of tint (80%) necessary. It's costing £150 all in, and will be ready to pick up tomorrow afternoon.