Their tubes are kah kah.........worse than useless actually. Last spring, I needed a 700c presta tube, on a sunday. As Wilkinson was nearer than Hellfrauds I went to them, got one and one spare. Got home and opened up the first tube, and it had no valve, just an empty threaded metal pipe, obviously useless. Opened up tube no. 2 , this one had a valve. Slipped it onto the rim and tucked the tyre back into the rim. Undid the valve to pump it up, and the dam valve came right out, leaving me another useless tube. No quibble getting my money back is the only good thing about the whole experience. Havnt been back in there since, but I may give that back light a go.