Certain countries have been classified by UK Visas and Immigration (UKVI) as being subject to the 'differentiation arrangements' which means applicants from these countries are subject to different documentary requirements when applying for a Student visa. These countries are also sometimes referred to as 'low risk' countries.
Students who are eligible for the differentiation arrangements are usually required to submit less documentary evidence than students from other countries. For example, you may not have to supply financial evidence with your application.
UKVI may still ask to see some of your supporting evidence after your application has been submitted - they carry out spot checks! If you are unable to provide the required documents you will be deemed to have made a false declaration. If this happens your visa application will be refused and you could be barred from making future visa applications to the UK. Therefore you are still recommended to prepare your documents and have them available in case you need them.