I do like the Marks & Spencer range of nail polish, particularly the £3 range! This a blue one aptly named Lagoon! Nice one ;-)
This is a nice colour and has subtle flecks of glitter too! It's easy to use and easy to apply. The lid is pretty good and comfortable to use. 2 coats were needed for a good finish. It did take a while to dry though, but dried to a smooth finish! I'd say it's a good quality nail polish!
I'd give it an 8 out of 10. Good all round polish and another winner from Marks & Spencer. £3 from their bigger shops or online from their official site.