Hello Dean have not got a CTD in Sheffield but as for Topps it varys only worth having if a customer rings up and says can you supply tiles i have seen in topps. It is not worth the card it is made out of for things like trims adhesive not cheap at all in you are in the yorkshire region i recommend The Yorkshire tile compnay 33% off everything which is already competitivly priced nearly half that of Topps all best mate
Best thing to do is go about it like this
ring up first get to speak to some one over the Phone get a name say u r a tiler use topps generally but wanted a change and wanted to enquire about getting a trade DISCOUNT card foronly make that clear becasue it can be mis understood for credit.
Then he or she shall say pop in and we shall give you one straight away no fancy forms or anything to sign u will find the place well cheap for all adhesives and grouts can,t be beaten if you need any more advice just pm me will advice you further accordingly gud luck