I got this as part of the lucky dip which Nails Inc. runs every now and then. You receive five random full size nail varnishes for £15, which isn't at all bad considering that one bottle normally costs £11. Belgrave Mews is the standout of the five for me and I've worn it loads since it dropped through the letterbox. As you can see, it's a rich forest green with a subtle copper shimmer running through it. As with other Nails Inc. polishes I've tried, the application is great and it's opaque enough to get away with just one coat if you're feeling lazy or rushed.
I think this colour was part of the spring 2012 collection, and I can't see it listed on the Nails Inc. website so assume it's no longer available. However, if you happen across it while you're out and about, I'd definitely recommend picking it up.