All students from outside the EEA and Switzerland must apply for a Tier 4 Student Visa, at their nearest British High Commission / Embassy / Consulate.
To apply for a Tier 4 Student Visa you must meet all of the following conditions:

You must have been issued a Confirmation of Acceptance for Studies (CAS) from a Tier 4 Sponsor, for a course that is Level 4 or above on the National Qualifications Framework (NQF);

You must be able and intend to follow a full-time degree course, or a weekday full-time course involving at least 15 hours per week of organized, daytime study;

You must be able to meet the costs of your course and maintenance (living expenses, including accommodation) and the maintenance of your dependants without working in the UK or claiming public funds;

You must not intend to work in the UK except part-time (20 hours per week maximum for Level 6+ courses, 10 hours per week maximum for Level 4 and 5 courses) or vacation work;
You must intend to leave the UK at the end of your studies.

The cost of applying for a Tier 4 visa is currently £199 (
Subject to change: check on
http://www.ukba.homeoffice.gov.uk/studyingintheuk/adult-students/visa-fees