In the US I also came across 'butter London', a Seattle based nail brand and one the first companies to sell non toxic nail polishes. Highly respected within the US for their 3 Free (non-toxic) nail lacquers all spared from harmful ingredients such as Formaldehyde, Toluene, DBP or Parabens.
I adore this glittering red colour called 'Chancer', a gorgeous rich ruby red that is lifted with sparkling shimmer particles, it reminds me of Dorothy's Ruby shoes in the Wizard of OZ, I will most certainly be wearing this one for a bit of razzle dazzle at Christmas parties this year.
It is smooth and easy to apply, gives an even coat and holds well on the nail and while some glitter polishes can become dull when dry, this one retains a good shine. I would recommend 2 coats for the perfect coverage.
Still relatively small in the UK with limited stockists that include lookfantastic.com and Debenhams, butter London is one to look out for: http://www.butterlondon.com