If you are a citizen of the European Economic Area (EEA) or Switzerland, you will not need a visa to study in the UK for up to 6 months. If you live outside the EEA or Switzerland, you will probably need a visa to study in the UK.
If you require a visa, you will need to apply for either a Standard Visitor Visa for up to 6 months or an 11-month Short-term Study Visa, depending on how long you will be studying for.
Citizens of some countries, including Brazil, Mexico, and Japan do not need a visa if they want to study in the UK for up to 6 months. Students from these countries will still need a visa letter from the school and must get their passport stamped by immigration when they enter and leave the UK.
Students from non-visa national countries who are studying for 6 months or less do not need to apply in advance. They must bring copies of all school documents to show immigration officers at the UK border.
Passport holders of Oman, Qatar and United Arab Emirates qualify for an Electronic Visa Waiver (EVW), which will allow them to study for a period of up to 6 months.