There are many factors that affect whether you need a visa to study in the UK. Students from outside the EEA or Switzerland need a visa to study in the UK.
Most international students need a Student visa.
However, exchange and study abroad students coming to Sheffield Hallam University for up to six months can choose to apply for a Short-term study visa instead. If you come to the UK on a Short-term study visa, you will not be allowed to do any paid or voluntary work and you will not be able to extend your stay in the UK.
Visit gov.uk/study-visit-visa for more information.