I'm based in Arnold. and use a few different suuppliers, it all depends what brands you like but I mostly use East Midland ceramics. They stock most of the Weber range and are always helpful with advice. I find their walls adhesives a good standard at a reasonable price.
Alternatively I use Bransons at Hucknall who stock the Granfix range, slighly more expensive but I do like their floor adhesives & grout.
If you ask you should be able to open trade accounts at both which gives you decent discounts.
Alternatively, give tile trend on manvers street a go.
Hope this helps.