When looking for international law journal articles,alongside using library search, the following platforms will be of use.
Index to Foreign Legal Periodicals (IFLP) - HeinOnline If your project involves foreign law, the Index to Foreign Legal Periodicals provides citations to scholarly articles on foreign, comparative and international law from law journals around the world. Covers 1960 to present; fully searchable from 1985 to the present. For advice on using HeinOnline see the products dedicated user guide
If you are researching EU or international law you will need to use the international and EU sections of the key legal databases to find cases and legislation outside of UK jurisdiction (please see the Legislation and Cases tab of this guide for training and advice on accessing and using these databases). You may also want to search across some of the alternative platforms and sources listed below.
BIALL How Do I? wiki / Foreign legislation sources (pbworks.com)
BIALL How Do I? wiki / European Union (pbworks.com)
You have access to the Oxford Bibliographies International Law Bibliography
Developed cooperatively with scholars and librarians worldwide, Oxford Bibliographies offers exclusive, authoritative research guides across a variety of subject areas. Combining the best features of an annotated bibliography and a high-level encyclopedia, this cutting-edge resource directs researchers to the best available scholarship across a wide variety of subjects.