Thing with Camskill is, if you know someone who can fit em for you cheap, they are unbeatable.
If you don't, not so much.
However, my previous pair I ordered from Camskill, then set about ringing trying to find someone to fit them.
Standard reply from a lot "no we won't fit tyres unless they're bought from us" (that's including independents)
I eventually found a independent place who'd do them for £15 a wheel, so if you're fitting a pair, that's £30 on top of the Camskill price.
Black circles, for the same tyres including fitting worked out at £30 more for a pair than the Camskill price inc delivery.
So essentially I gained nothing from ordering from Camskill, as both came out at the same price, but one with a lot more hassle.