Entry clearance & immigration regulations ：
首先，所有关于英国的签证均是由 UK Visas an Immigration （ UKVI ）来审理，我们来看一下 UKVI 的官方定义：
Entry into the UK is manage by UK Visas an Immigration (UKVI). The UKVI points base visa an immigration system (PBS) is esigne to be objective an transparent, an give stuents the peace of min that the courses they are applying for are run by bona fie institutions approve by the UK government. Immigration regulations are subject to change on a regular basis.
大意就是 UKVI 是负责审理一切英国签证和移民事务， PBS 是类似于用来给每一份签证申请人打分的一个系统，在英国政府的大力监管下，英国的签证旨在为每一个来到英国学习的个体一个最平和的思想和学习环境；同样，移民的政策和主旨也并非一成不变的。
作为国际留学生，我们接触的最普遍的就是学生签 Tier 4 （ General ） stuent visa 和短期访问学习签证 SVV 了。
以下便是 Tier 4 官方简介：
You can apply for a Tier 4 (General) stuent visa to stuy in the UK if you’re 16 or over an you:
have been offere a place on a course;
can speak, rea, write an unerstan English;
have enough money to support yourself an pay for your course - the amount will vary epening on your circumstances;
are from a country that’s not in the European Economic Area (EEA) or Switzerlan;
meet the other eligibility requirements
要点： 16 岁或以上可申请 general stuent 签证；如果年龄在 4-16 岁，那么签证类型就是 Tier 4(chil) ；
达到英语的要求，这里一般是按照学校课程要求的雅思成绩；
提供可以支付学费和生活费的存款证明（具体存款金额多少，存款怎么存，欢迎小窗咨询咖咖酱）
EEA （欧连体）和瑞士等国家的公民，不需要签证
