As many of you are already aware, nail varnish can be very pricey, especially those in the more interesting or beautiful colours. I have an awful habit of painting my nails every 2-3 days, although that isn't something I'd advise because it can really damage the enamel on your nails. (Make sure if you do apply colour to your nails, you use a base coat first - I use Sally Hansen as hard as nails)
I've been searching the high street for an inexpensive nail polish for a while, and I came across one from Collection 2000, which I happened to find in Morrisons, but I believe Collection 2000 is in Superdrug and boots as well.
32 BMX Bandit
Collection 2000 and I believe it was £1.75
I think this gives a nice blue tone to your nails, its just the right colour for me, not to over powering.
However, on the downside, because of the cheap quality of the product, I have noticed it doesn't really stay on for very long, and is easily chipped, which is a shame, because this colour is almost identical to some of the more expensive brands on the market, but I do feel you don't get much out of this product. Never the less I shall use it again. I don't like to waste anything :)