A CAS is a Confirmation of Acceptance for Studies. Once your offer is confirmed as Unconditional and your next instalment of £8000 has been paid, we will request and issue your CAS number, which you will need to apply for a visa. This will happen after 01 June 2020 and (usually) between 3 months and 1 month before your programme starts.
The balance of your fees will be due by the start date of your programme in September 2020. You can choose to pay this balance in two equal instalments, one in September 2020 (before your semester 1 classes start) and the other in January 2021 (before your semester 2 classes start).