Why go anywhere else?
I've used Black Circles several times over the last few years and have never yet had a bad experience. The prices are the main draw and I have no bothered to do the comparisons the last couple of times because my experience has been that they will be the cheapest or if not it's only by a quid or two. The other attractions are the convenience, the choice and the quality. Friends often ask me where I go for tyres because they know I'm into cars (I tell them a lot) and I have no reservations about sending them in Black Circles direction, that's how I heard about them and am happy to spread the joy.