I'm not a shimmer gal when it comes to nail polish. I like the simplicity of cremes, and think they look more expensive.
However, this polish has inspired a bit of a rethink. I've been searching for a decent deep forest green polish, and in cremes I'm not sure the kind I'm looking for exists. Green tends to go flat in creme formulations whereas I want one that's shiny shiny.
Cue M&S Essentials Emerald. This polish is very subtly shimmery - in some lights it almost looks like a creme, but it has a gloss and depth you wouldn't get with a creme. It's gorgeous! (and if you can't afford/find the recent MAC Fall Trend polish Jade Dragon, it's a very very good alternative - it has a teensy bit less of the teal microglitter but it's still there).
Closeup of microglitter (pic isn't great but I hope it gives an idea):
It's big 3-free and £2.50. In terms of consistency, it's runny and requires 3 coats, but dries fairly fast. It has an amazing gloss on its own, even without topcoat. Wear is not too bad - 3 days without chipping. Love!