Visas and Immigration for study in the UK

CAS for extending your visa

If you need to extend your visa to complete your studies, you'll need a CAS to support your Student Visa application

The information on this page is relevant if you are a current student of the university, and want to extend your Student Visa to continue with an existing programme of study. If you need a visa for a new programme of study, please see our information about CAS for a new programme of study.

The university will only issue a CAS to extend your visa if you are required to attend in person. The university's sponsorship policy confirms the circumstances under which a CAS to extend will be issued.

To prepare for your Student Visa extension, you should read our guidance on extending your student visa.

What's in your CAS

A CAS (Confirmation of Acceptance of Studies) is an electronic document issued by the university and sent to you by email. It contains a copy of information which has already been provided to UKVI from the university. In your CAS statement you will find:

  • Your CAS number
  • Information about your programme of study
  • Information about your tuition fees
  • Confirmation of whether you will need an ATAS certificate

How to get your CAS

To get your CAS, you need to complete the following steps:

Firstly, you need to check if you need to provide any documents with your CAS request, to the Student Visa Compliance Team. The following is a list of documents that may be needed:

  • Bank statement or other financial document. Note - some students may not be required to provide a bank statement with their visa application.  If this is the case for you, you will not need to provide any finance document as part of your CAS request. You can check whether you will need a finance document with your visa application and our guidance on finance documents here: demonstrating finance for a student visa application
  • Birth certificate and consent letter (only required if you are providing a parent's bank statement)
  • ATAS certificate (if applicable)
  • Entry stamp in your passport if you are applying from outside the UK.  This is not applicable to students who have never travelled to the UK for study

Please refer to our information on the documents you require for your visa application for more detail about these documents.

If you are a student returning following an interruption of studies, the university will contact you in June/July, asking if you wish to resume your studies in September, and this will include instructions on how to apply for a CAS.

Completing and submitting the CAS request form

After this, complete our CAS request form, and send it together with your documents by email to

If you submit your CAS request form to us without all of the required documents, we will not be able to process your CAS and you will need to resubmit your CAS request form again.

The CAS request form asks you to confirm your end of programme date. In order to ensure this date  is correct, first please discuss with your Faculty or Programme Leader before completing this section. We will need to see your official results letter is available online if you are repeating or deferring for the next academic session, because the university cannot issue a CAS based on pending resit results.

Once we have received your completed CAS request form and documents, we will aim to issue your CAS within four working days.

Check what funds you need

Please check the financial requirements for your Student Visa application. You will also need to know if your outstanding tuition fee balance for the current academic year.

  • You can check your fees by logging in to the student portal and going to 'check accounts, make online payment.'
  • If you are unsure about your tuition fees, you can check this with the Student Fees and Funding team or by visiting the Student Centre. You will need an accurate figure so that we can process your CAS request.

After your CAS is issued

Please check carefully that the information in your CAS statement is correct. It's important that the information you enter into your Student Visa application form matches your CAS statement.

If you need advice about your Student Visa application, please contact the International Student Advice Service who will be able to help you.