Hi, You will have to apply for 2 main tests namely TOEFL/IELTS and SAT exam. After you clear the above exams you can apply in the universities there.
Check the complete details here: http://www.studyabroad.careers360.com/study-uk-admission-cycle
The complete admission cycle is also mentioned above.
Hope this helps.
Good Luck.
Eligibility | Application | Exam Pattern | Admit Card | Preparation Tips | Books | Question Paper | Accepting Colleges
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile