I guess it would be a waste if you have already checked there selection of vinyls which they stock, i've just looked on the Selectadisc site and it isn't really the type that i'm after as it's just the usual rap artists i'm more into the underground scene really, thanks though.
All of the HMV stores which i've been in mainly stick with dance music more than anything, i guess i'll just have to keep to ebay seeing as there isn't to many places around here which happen to stock the type of music which i'm after, thought i'll try anyway as shipping from the usa soon adds up when it's around £7 for 1-2.
Good to know about the local stores anyway for all the ones which have been mentioned.