I picked up my first Butter London polishes recently and I couldn't be happier with the colours and quality of The Black Knight and Tart With A Heart (I also have yet to try Knackered).
Firstly, I wore The Black Knight alone for a day or so. I was really impressed with the application, expecting it to be sheer and more of a glitter top coat but it was perfectly opaque in two coats and dried extremely fast.
Now, this one really is a glitter top coat and a very pretty one at that. A pinky gold base with tons of glitter and shimmer of varying sizes and shades. I couldn't wait to top my existing mani with this polish and I wasn't disappointed with the resulting effect.
These polishes may be on the slightly more expensive end of the scale but I will be seeking out some of their more unique shades as I'm so impressed with the formula. I don't think I'd pay so much for their more mainstream cream shades unless I'm completely smitten with the colour but you never know, it may be the start of a beautiful addiction. ;)