ATAS is the Academic Technology Approval Scheme
Certain science and technology programmes in the UK require you to have Academic Technology Approval Scheme (ATAS) clearance. You must apply for this before starting your studies.
If you need to apply for a Tier 4 visa, you will need to obtain your ATAS certificate before you can make your visa application.
Find out more about whether you need ATAS and how to apply on the Immigration website: