Just in case anyone uses this but bleaches at the prices QVC charge, head over to ebay and look for the seller "rudki0", currently selling 2x50ml for £31, with free P&P.
http://www.ebay.co.uk/itm/111951749385?_trksid=p2057872.m2749.l2649&ssPageName=STRK:MEBIDX:IT
http://www.ebay.co.uk/itm/111951749385?_trksid=p2057872.m2749.l2649&ssPageName=STRK:MEBIDX:IT