What is a CAS?
International students applying for a Tier 4 Student Visa will need a Confirmation of Acceptance for Studies (CAS) number. This number confirms to UK Visas and Immigration (UKVI) that you have been accepted to study at a valid UK institution. Once you have met a number of conditions, including accepting an unconditional offer, you will be sent a CAS letter that will confirm your CAS number.
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