If you are from one of the countries such as European Union plus Iceland, Liechtenstein and Norway, then you do not need to obtain a visa or certification so to speak to study in UK. However, if you are not from one of the countries mentioned above, then you will need to meet a certain immigration criteria in order to be granted a student visa to study in the UK. You will need to provide the following:
1. A passport
2. A letter of unconditional acceptance for a full-time course
3. Evidence of your ability to meet, without working in the UK, the costs of your course, accommodation and maintenance and to support any dependants accompanying you.