Ahh Cyber Candy, that's where I used to buy all my root beer from when I lived in London, now I have to make do with the stuff Tesco sells (that tastes more of caramel than sasparilla) or the 1.60 for six cans from Asda which clearly is t the real stuff but is remarkably tasty considering how cheap it is.
I was always partial to A&W but the nicest one I've ever had was from Cyber Candy. It was a limited one and had nutmeg in it,melody pricey as it was a fiver for one bottle but if that was a regular flavour and was cheaper aid be drinking it more often than not.