Ps I bought two, the second B+Q store started to say that Screwfix, and weren't sure if they could match fix, when I showed them their own literature they reluctantly agrred !
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I know it is all about saving money but personally I would rather pay a couple of quid more and give the cash to the company that has the balls to price it competitively in the first place. But I suppose on the other hand it is good to screw the company that has it for sale at a ridiculously high price ;o)
Also if you go through Quidco to screwfix you get 6% back.