EThOS stands for Electronic Theses Online Service.
EThOS is the database of UK doctoral theses that is run by the British Library.
The collection is currently being moved to a new platform, but you can search through theses added to the collection before October 2023 in the British Library catalogue.
All theses in EThOS prior to October 2023 are in the British Library catalogue. You can filter your search in the catalogue by using the ‘Advanced search’ and filtering ‘Material type’ to ‘Theses’. This will show you the name of the awarding university. You can then search the university’s institutional repository or library catalogue for the thesis.
You can find further information and updates about EThOS here.