For undergraduate applications, the documents depend on the route. If you apply directly to Swansea as an international applicant, the university asks for certificates and transcripts, or a transcript or module list if your qualification is still pending, English-language test certificates if appropriate, and open references if you already have them. If you apply through UCAS, your application will also include your education history, a personal statement, and at least one reference.
For graduate taught applications, Swansea asks for a completed application, CV or resume, personal statement, degree certificate and transcripts, English-language evidence if relevant, and in some cases references, a passport copy, a sponsor letter, or a portfolio or research abstract depending on the course. For graduate research, the checklist is heavier: a supervisor email showing in-principle interest, a research proposal or synopsis, qualifications and transcripts, official translations if needed, English certificate, sponsor letter if available, CV, and two open reference letters, plus the EDI Monitoring Form for PhD, EngD, ProfD, and EdD applicants. This fits the Swansea stories well: Samuel Nduwayezu said he prepared a personal statement around leadership and public-health impact, while Mohsin Ali stressed supervisor contact, proposal fit, and using the personal statement and impact sections carefully.