Held in the British Library; other New Testament manuscripts can be found in the British Library here: http://explore.bl.uk/primo_library/libweb/action/search.do?dscnt=1&tab=website_tab&dstmp=1347842787620&vl%28freeText0%29=new+testament+greek+manuscripts&fn=search&vid=BLVU1&mode=Basic&fromLogin=true