British Library Ethos: Electronic Theses Online Service (EThOSnet)EThOS is the UK’s national thesis service which aims to maximize the visibility and availability of the UK’s doctoral research theses. There are approximately 380,000 records in this database relating to theses awarded by over 120 institutions. Around 120,000 of these also provide access to the full text thesis, either via download from the EThOS database or via links to the institution’s own repository. Of the remaining 260,000 records dating back to at least 1800, three quarters are available to be ordered for scanning through the EThOS digitisation-on-demand facility.