As per the review title I find the Butter London range to be a bit of a mixed bag!
I absolutely LOVE their glitter polishes - they're so packed with pigment and glittery bits that you can get away with using just 1 coat if you want to, something I've never found with any other brand. The only downside is that they're quite a thick/ chunky glitter so you cant get a smooth finish so if this bothers you then you wont like these (it doesn't bother me though).
On the other hand their normal colours are pretty standard I think. A great colour range but for the price you might as well buy OPI or even Revlon as consistency/ wear and tear wise they're nothing special.
This range didn't cut the mustard with me, I'm an avid Opi fan but was willing to give this range a go, very pricey but I managed to find a few on sale. I loved the range in colours and found it hard to decide which to go with but in the end my favourite was a emerald green colour, it went on easily enough but I had to do at least 3 coats of colour to get the same as the bottle. It didn't dry as quick as Opi does and it didn't last nearly as long either. Bit of a disappointment but maybe the lighter colours are more suitable, I'd probably give it another chance but just the one more.
Tips: Look out for the farmers sales as they are quite pricey at full price.