Hi, I’m a BMW fan too. I did the tinting on https://www.tintfit.com/shop/car-window-film, so I can guarantee the quality. The site has a user-friendly and simple interface, so it will be easy for you to use. Also, there are many different types of tinting to choose from, even nanoceramic tinting. Of course, there are also window films, you can order a chameleon or something like that. They work all over the UK, and the most important thing is that it’s quite cheap. We hope my commentary helped you.