International students going to the UK to study full-time must apply for a student visa. Criteria are set by UK Visas and Immigration (UKVI). Please check procedures and requirements in their official website.
Certificate for Acceptance of Studies (CAS)
Once you have firmly accepted an unconditional offer to study at a given university and have sent them your passport details via your applicant dashboard, they will email you a CAS.
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This is a unique electronic reference number and accompanying electronic virtual document containing information about your course, as well as your personal details. It is not a paper document.
Applying for your visa
You must enter your CAS number on your visa application form. Having a CAS does not guarantee your application will be successful; you must still meet all the other eligibility criteria.
If you notice any errors in the information contained in your CAS, contact the university's visa team before making a visa application.