EThOS (Electronic Theses Online Service) provides access to UK doctoral theses from The British Library, in association with higher education institutions in the UK. Most available theses are PhDs, but also other types of doctoral thesis, e.g. D.Ed., Mus.D., D.Eng (for M Phil and other theses contact our Get It For Me service). The service searches the records for over 650,000 UK doctoral theses, however following a cyber attack in 2023, it is not always able to provide access to the full thesis. Where possible, users are directed to a University's repository for access to the thesis.