I see that the fuse comes with a special cloth to wipe it with pre installation. I'm wondering how they deal with the interface between the ends of the fuse and the copper coated spring clamps in the plug top. The electricity would travel from the wall socket into one end of the fuse, the fuse then performs its magical transformation of the electricity only for it to be contaminated by the less than pristine copper coated fuse clamp in the plug top. I see an opportunity for a reassuringly expensive hand crafted plug top specially tuned to the UK power supply ( that's just given me pause for thought, is there a version of the fuse that is "tuned" for 60Hz? )