童鞋们：我现在是在英国的访问学者，签证是academic visitor，我想一年访学之后在这读博士，大家谁知道能不能转呢？导师已定，学校的Offer也不是问题。主要是这方面的签证政策不知道啊
http://www.ukba.homeoffice.gov.uk/visas-immigration/studying/adult-students/applying-inside-uk/#
Can you switch into the Tier 4 (General) student category? Close
You can switch into Tier 4 (General) without leaving the UK if you have, or were last given, permission to stay in one of the following categories:
Tier 1 (Post-study work)
Tier 2 (General)
Tier 2 (Intra company transfer)
Tier 2 (Minister of religion)
Tier 4 (Child)
prospective student
student (under the rules in place before 31 March 2009)
student re-sitting an examination
student nurse
students writing up a thesis
student union sabbatical officer
work permit holder
postgraduate doctor or dentist
Science and Engineering Graduates Scheme
International Graduates Scheme
Fresh Talent: Working in Scotland Scheme
If you are currently in the UK in any other immigration category, you must leave the UK and apply for a Tier 4 (General) visa from your country of residence.
你需要回国重新申请。
补充说下，类似这样的案例很多，很多访问学者一年之后跟学校达成协议，然后继续留在学校读博士。但是这里有签证问题，第一，因为当初申请人办理访问学者的时候提交的资料是1年之后继续回国工作。因此很多时候这个理由会被用于拒签你的学生签证。第二本身访问学者相对来说年龄较大，语言能力的问题是否满足博士的要求也是一个问题。因为很多访问学者当时是不要IELTS或者PTE成绩的，但是学生是必须要提交的。类似这样的案例龙朔签证做过很多，很多申请人都是拒签后找到我们的，建议你看看龙朔的网站www.gotovisa.com 电话咨询下相关顾问，再做决定。
Thanks a lot. it’s very helpful.
谢谢啦，解释的很好啊