In June 1998, The Institute for Resource and Security Studies (IRSS) published a report titled High Level Radioactive Liquid Waste at Sellafield: Risks, Alternative Options and Lessons for Policy. The present document of June 2000 provides an updated review of these issues, accounting for developments since June 1998. Especially relevant is a February 2000 report by the Nuclear Installations Inspectorate (NII). This NII report and other new information confirm and extend the conclusions and recommendations in IRSS’s June 1998 report, which are noted at the end of this current document. They confirm that Sellafield’s stock of liquid high level waste represents one of the world’s most dangerous concentrations of long-lived radioactive material. Moreover, this danger persists because nuclear fuel reprocessing continues at Sellafield, even though reprocessing is uneconomic and has other disadvantages.