A CAS is a Confirmation of Acceptance of Studies. It is a virtual document sent to the UKVI that states your personal details, course details and evidence of how your sponsor, the University of Bedfordshire, has assessed your ability to study your course. As your Tier 4 sponsor, once we submit this information to the UKVI, they will allocate a CAS number to you. You will need this number to make your visa application. The visa application centre to which you submit your visa application, will then access this information on the UKVI system when assessing your visa application.