The British High Commission in Sri Lanka has called on students to apply for their visa to the United Kingdom as early as possible as the decision to process would take five weeks.   
“We receive higher number of applications in August so you should start preparing your application and submit now,” the High Commission tweeted.   

The requirements for visa applications are as follows;   

- Depending on your personal circumstances and where you are applying from, you may also need:   
Proof of English language proficiency.   

Proof that you can pay for your course fees and maintenance for one academic year. The amount on your personal circumstances.   

- If you are waiting for your CAS reference number, you can prepare your supporting documents, and in the meantime.   
You will need:   
Current passport/travel documentation   
Confirmation of Acceptance for Studies (CAS) reference number   

- Other requirements:   
Consent from a parent or guardian if under 18 years of age.   
Copies of your education certificates   
TB test certificate (country dependent https://gov.uk/tb-test-visa/countries-where-you-need-a-tb-test-to-enter-the-uk…   
ATAS certificate (course dependent) etc.,