Just to report that neither of the numbers in the Unverified list for Currys Horsham work any longer.
Looks like the telecoms manager of DSG Retail Ltd has been working hard to cut off all forms of direct store access and 0844 avoidance.
However the 0500 customer services number for Currys agreed to transfer me to their central sales line who then agreed to call the store in Horsham on my behalf to ask about the clearance item I saw a few days ago and wanted to know if it was still available. They claim that it is an incomplete item of stock not available for customer sale. But I would have found out much more by speaking to the store directly of course.