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CAS Letter to Study in UK

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Planning on studying in UK for a better future and better education you can start on by applying for UK student visa. There are various parts to applying for a visa for UK. Just so you know, getting CAS letter is also a part of your visa process, without it, you won’t be able to apply for UK student visa.

Let’s move forward and know more about CAS letter required to study in UK.

What is a CAS Letter?

CAS unfolds as Confirmation of Acceptance for Studies. This letter is an electronic document issued by a UK university or college licensed by the Home Office to sponsor international students. You will receive a unique CAS reference number, linking your Student Visa application to your chosen university and course.

The number in your CAS letter defines that you have been formally accepted to study in the UK. You will need to include your CAS number when applying for your UK student visa, which confirms your admission and sponsorship status.

What is CAS Letter UK

What is Included in a CAS Letter?

The CAS letter UK contains information about the student enrolling at the university, including a CAS reference.

  • Number: The unique identifier you’ll use in your visa application.
  • University Details: Sponsor license number, name, and address of your institution.
  • Student Information: Your full name, date of birth, nationality, and passport number.
  • Course Details: The title, start and end dates, level of study, and study mode (full-time or part-time).
  • Tuition Fee Information: Total tuition fees, deposit paid, and any remaining balance.
  • English Language Proficiency: Details of accepted tests such as IELTS or PTE, if applicable.
  • Previous UK Study Record: If you have studied in the UK before, previous course and visa information.
  • ATAS Clearance (if required): For specific science or research-based courses.

You should check your details properly, as any mismatch in information between CAS UK and visa application documents may create delays or visa refusal

Importance of CAS Letter to Study in the UK

The CAS letter is more than just a formality; it is an absolute requirement for all international students.

  1. CAS letter for UK is mandatory for visa application, you cannot apply for a UK student visa without a valid CAS number.
  2. This serves as proof of admission to a recognized UK institution and has offered you a place.
  3. It serves as your verification of eligibility on academics, qualification, financial status, and English proficiency.
  4. The Home office uses this letter to ensure immigration compliance and that your chosen institution meets all the sponsorship responsibilities.
  5. This directly ties course and institution link to your visa, preventing misuse of visa sponsorships.

Without this letter your visa application will not be processed—making it one of the most critical documents in your study abroad journey.

How to Get a CAS Letter to Study in the UK

The process of obtaining a CAS letter depends on your enrollment type, but it generally follows these key steps:

For New Students

  1. Accept Your Offer: Once you receive an unconditional offer from a licensed university, accept it officially.
  2. Pay the Required Deposit: Most institutions require a tuition fee deposit before issuing a CAS.
  3. Submit Supporting Documents: Provide valid academic transcripts, passport copies, financial proofs, and English proficiency certificates.
  4. CAS Issuance and Verification: After document verification, your university will issue your CAS letter with a unique reference number via email.

For Pre-Sessional Students

If you’re enrolled in a pre-sessional English or foundation course, you’ll typically receive a separate CAS for that course. Once you progress to your main degree program, the university will issue a new CAS linked to your main course.

For Current Students

Students already studying in the UK may need a new CAS to:

  • Extend their visa for further study.
  • Change their course or university.
  • Resume studies after a break or deferral.

In these cases, the student must meet the institution’s visa compliance and academic progression criteria before a new CAS can be issued.

CAS Eligibility Requirements for Current Students

If you are already enrolled at a UK university, you must meet certain eligibility conditions to receive a new CAS. These typically include:

  • Good academic standing and attendance record.
  • Valid Student Visa status with no immigration breaches.
  • Sufficient funds to cover tuition and living expenses.
  • Meeting progression requirements (for example, moving from bachelor’s to master’s).

Your university will assess your application based on these criteria before confirming your CAS.

Things to Know While Applying for a CAS Letter for the UK

  • A CAS is valid for six months from the date of issue.
  • You must apply for your Student Visa within six months of receiving your letter and no later than three months before your course start date.
  • Each letter can only be used once—if your visa is refused, you may need a new one.
  • Double-check all details such as your name, passport number, and course code before submission.
  • If your letter contains incorrect information, contact your university’s international office immediately.

Who Issues CAS Letters?

CAS letter can only be issued by universities, colleges, or institutions that are licensed student sponsors by the Home Office. These institutions ensure that international students meet the eligibility for sponsorship. UK universities sent CAS via email, and it cannot be printed or requested from any third-party agency.

When will you receive CAS Letter

Sample Document

You can look into the CAS UK sample from us at Student Connect. This helps students to get the gist of knowledge on how it looks and what information it contains. Students can be at ease when they get their CAS letter from UK university and be able to look into the information more deeply. Sample documents are even helpful to prepare the necessary documents while preparing for CAS. Click into the link below to look into the CAS sample document.

FAQs About CAS Letter for UK

You should apply for your CAS once you have accepted your unconditional offer and paid your deposit. Ideally, request it at least 8–10 weeks before your course starts.

It typically takes 5–15 working days after submitting all required documents and payment.

Most universities issue the CAS free of cost, but some may include an administrative fee in your tuition deposit.

No, each CAS is specific to a course, university, and intake. You must request a new CAS if you change any of these details.

You’ll need to contact your university to request a new CAS, depending on the reason for refusal and university policy.

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