I'll be driving my car from Belgium to the UK, with plans to then drive around the country.
Like most cars in the European mainland, my car's headlights/headlamps are slightly adjusted to the right side of the road. When driving in the UK, though, this blinds oncoming traffic. That's why there's a type of sticker made to apply to headlights to prevent this problem, and why these stickers are required in the UK for right-hand drive cars.
When I lived in the Netherlands, you could buy them in almost any town. In Belgium, where I live now, few shops sell them.
I'm having trouble finding them, partly because I don't remember what they're actually called. Does anyone know the proper name of these "blocking" stickers so I can search for them on the Internet?