If you're a new student and you're going to miss more than the first 3 weeks of classes you may need to defer (email
admissions@st-and.ac.uk). If you're a returning undergraduate student and you'll miss more than the first 3 weeks of classes then you will need to take a Leave of Absence (email
registry-ug@st-and.ac.uk). If you're a returning postgraduate and will need a Leave of Absence email
registry-pg@st-and.ac.uk. There is a Senate Regulation that no undergraduate student may miss more than three consecutive weeks of study.
If you need help with your visa email
sss@st-and.ac.uk - they have a visa expert.
Nothing succeeds like a toothless budgie.