If you are preparing the application without the help of an immigration lawyer, the chances are you may miss an important document or incorrectly understand the application form and give the wrong answer. It is not uncommon for an application to be refused simply through a mistake made by the Home Office. The immigration rules are so complex that sometimes the Home Office officials are unable to understand them themselves. A parliamentary committee has specifically addressed the complexity of visa applications and recommended that the Home Office simplified the application process to make it accessible for people who cannot afford to pay for legal advice.