People often ask if they can find an official list of required documents for the visa they are applying for. While there are some general lists, there is no detailed 'must have' list. The reason for this is simple. As each application is unique, reflecting the applicant's and sponsor's individual circumstances including personal and financial, it's just not possible to have a definitive list. You have to think what you need to evidence the particular way you are meeting the requirements. Of course this isn't very helpful for those who haven't done this sort of thing before, and you need up-to-date knowledge of rules and how they are applied. Read all the relevant rules and guidance from Home Office available online. Then compile your tentative list of documents. Compare other people's lists and post it for comment and criticism. While we cannot give legal advice, we are happy to share our views and personal experiences.