To submit an application for a Tier 1 visa, you have to show that you are proficient in English by proving one of the following:
• That you have cleared a test in English comparable to level C1 of the Council of Europe's Common European Framework for Language Learning (equal to a grade C or better at GCSE or an estimated general band score of 6.5 on an IELTS exam)
• If you are taking IELTS exam for Tier 1 visa of UK, you have to score at least 6.5 bands in IELTS General Training. Whereas IELTS Academic is also acceptable for Tier 1 Visa of UK
• You don’t require any English test If you come from a country where English is the primary language. This includes the USA, Antigua and Barbuda, Australia, The Bahamas, Barbados, Guyana, Jamaica, New Zealand, St Kitts and Nevis, St Lucia, Belize, Canada, Dominica, Grenada, St Vincent and the Grenadines, and Trinidad and Tobago.
• If you have taken a degree taught in English from a list of select countries, verified by using the National Academic Recognition Information Centre data. The countries include Antigua and Barbuda, Australia, The Bahamas, Barbados, Belize, Dominica, Grenada, Guyana, Ireland, Jamaica, New Zealand, St Kitts and Nevis, St Lucia, St Vincent and the Grenadines, Trinidad and Tobago, the UK, the USA. Note: Canada is NOT included in this list.
• If your degree was earned in one more country, information provided by UK NARIC can verify if the English-taught degree is suitable enough to satisfy the English language requirement.
Winning proof of one of these criteria will make you the required 10 additional points for the English language requirement.