以下是留学网为大家独家整理并翻译的英国四级签证综述，涉及申请要求、材料准备、签证有效期等方面的内容。希望对有意留学英国的学生有帮助。
四级签证分两个小类别：四级一般签证和四级儿童签证。
四级一般签证针对有意来英国学习且年龄16岁及以上的学生，四级一般签证学生在英国接受的教育为16岁后教育(post-16 education)。
四级儿童签证针有意来英国学习且年龄在4到17岁之间的学生。四级儿童签证学生只能在独立学校学习。
在英国以外申请四级学生签证需要哪些材料
你需要提供：
1.确认函(CAS)。确认函由你的四级赞助方(给你提供课程名额的教育机构)线上完成，包含你、课程、证书、英语语言技能证明等方面的详细信息。赞助方会给你确认函代码，代码在申请签证的时候用到。
2.经济证明。你需要想我们出示证据(如银行申明)，表明你有足够的钱支付第一年的课程费和9个月的生活费。
3.英语语言证书。如果你属于四级一般学生，你需要证明你有较高的英语水平。需要什么样的英语语言能力证书取决于你申请什么样的课程。你可能还需要参加安全英语语言测试，以顺利申请签证。
4.学术技术审核计划(ATAS)证书。如果你想从事科学技术方面的课程研究，你需要该证书才能申请签证。
5.肺结核检查证(根据国家地区而定)。
所需证件，除非有特定说明，一般都指原件。证件不是英文的，要翻译成英文。
怎么申请
1.登陆www.visa4UK.foc.gov.uk网站，填写签证申请表，预约、线上付费。
2.准备好打印件的签有你名字的申请表、所需证件、护照、护照型照片。
3.于预约的时间去签证申请中心提交申请表和生物数据。可能还需要几分钟的面试。
需要多久才能拿到签证
我们计划15天以内办好学生签证。我们建议你尽早申请，但不能早于你来英国的前3个月。
有些国家有3-5天的优先签证付费服务。你可以访问你当地的签证申请中心网站，了解优先服务方面的信息。
可以在英国待多久
签证有效期一般为课程时长。学位水平以下的学习最多可以待2年，在18岁之后;学位及以上的学习可以待5年，有时更多。16或17岁、以四级一般学生身份学习的时间，和17岁及以下、以四级儿童学生身份学习的时间不算在内。
可以在英国工作吗
这取决于你申请的课程的级别和你的签证赞助者的类型。更多信息可以参看我们的网站www.gov.uk/tier-4-general-visa。
学完课程之后可以留在英国工作吗
有很多选项可以选：
1.博士扩展计划。该计划针对成功拿到PHD和其他博士资格证的在高等教育机构学习的学生。
2.二级一般签证。针对收到和学历相匹配的工作录用通知、工资水平在合理范围内的学生。
3.一级毕业生企业家签证。针对有创业意向的学生。
4.五级签证。针对有意从事职业培训的学生。
不是所有继续教育学生都可以在英国申请延长签证有效期或转入其他签证。有些需要离开英国才能申请。
可以携带伴侣和孩子来英国吗
以下学生才可以带伴侣和孩子来英国：
1.在高等教育研究生阶段学习、课程时长不少于12个月的学生
2.政府赞助的、课程时长超过6个月的学生
在英国学习期间父母可以来英国吗
对于年龄不超过12岁、在独立自费走读学校学习的学生，有专门的签证规定，家长(一位)可以来英国陪伴孩子。
可以延长签证有效期吗
可以。你可以申请延长签证有效期，在当前的赞助者那里学习;或者，如果你的当前四级赞助者属于下列机构，你可以申请延长签证在别的机构学习：
1.高等教育机构(HEI)
2.海外高等教育机构
3.开设有高等教育学前课程的内嵌学院
如果你当前的赞助者不属于上述机构，你又想持四级签证继续在英国学习，这时你必须离开英国，在英国以外申请。
在英国全境内，你都可以在线申请签证，预约提交生物信息。
There are two categories under Tier 4:
Tier 4 (General) - This category is for students coming to the UK for post-16 education. A Tier 4 (General) student must be at least 16 years old.
Tier 4 (Child) - This category is for children between 4 and 17 years old coming to the UK for their education. This route can only be used by those studying at independent schools.
Where documents are requested, you should provide originals unless we specifically state otherwise. Where these documents are not in English you may need to provide a translation.
How do I apply for my visa?
1.Go to www.visa4UK.fco.gov.uk to complete your visa application form, book an appointment and pay your visa fee online.
2.Prepare your application package including a printed and signed copy of your application form,your supporting documents, your passport and a passport style photo.
3.Visit the visa application centre to submit your application and biometric data at the time of your appointment. You may also be required to sit a short interview.
How long will it take to get my visa?
We aim to process student visas within 15 working days. We recommend that you prepare and apply for your visa well in advance, but no more than 3 months before you intend to travel.
Some countries offer a 35 day priority visa service for an additional fee. Check your visa application centre website for information on available priority services www.gov.uk/find-a-visa-application-centre
How long can I stay in the UK?
Your visa will be granted for the whole length of your course. The maximum amount of time you can spend studying is two years below degree level since the age of 18, plus five years at degree level and above, with some exceptions.
Time spent studying as a Tier 4 (General) student when you were 16 or 17 years old, or a Tier (Child) student when you were aged 17 or under is not included.
Can I work in the UK?
This will depend on the level of the course you are applying to study and the type of sponsor you have. Further information is on our website www.gov.uk/tier-4-general-visa
Can I stay and work in the UK after completing my course?
There are a number of options available if you wish to stay in the UK to work after your studies:
The Doctorate Extension Scheme for students successfully completing a PhD or other doctoral qualifications at a higher education institution
Tier 2 (General) for those with a graduate-level job offer which pays an appropriate salary
Tier 1 (Graduate Entrepreneur) for those who want to develop a business idea
Tier 5 for those undertaking professional training
Tier 5 (Internship)
Not all further education students are able to extend their visa or switch to another visa route whilst they are in the UK they will have to leave the UK to make such an application.
Can I bring my partner and children with me?
Only the following students will be able to bring their partners and children to the UK:
Postgraduate students at higher education institutions on courses of 12 months or more
Government sponsored students on courses lasting longer than 6 months
Can my parent accompany me while I study in the UK?
There is a visa route which allows a parent to accompany a child 12 years or younger and is attending an independent fee paying day school.
Can I extend my visa in the UK?
Yes you can.
You can only apply to extend your leave to study at your current sponsor, or at another sponsor, if your current period of Tier 4 leave is sponsored by:
a Higher Education Institute (HEI);
an overseas HEI; or
an embedded college offering pathway courses.
If you are currently sponsored by any other type of institution you must apply for a visa from outside of the UK if you wish to undertake further study under Tier 4.
You can make your application online and make an appointment to submit your biometrics at locations throughout Great Britain.