You might have already known that there are several things that require you to prove your skills in using English. One of the things that require you to do so is the process to the get the permit to allow you to stay in the United Kingdom for a long time or even move to the country. So, you may ask the question: do you need to demonstrate the level of English language skills to apply for UK Visas and Immigration (UKVI) applications? The answer, then, will be a yes.
IELTS is one of the tests listed on Secure English Language Tests (SELT) approved for UKVI. If you need an IELTS test as an application requirement for UK Visas and Immigration (UKVI), then you need to take the test such as the B1 english test at a location determined by UKVI. By taking and passing the test, you will be able to prove that you have sufficient skills in English as required.