The timescale depends on your route, such as a work, study or family visa, your nationality and whether you apply from inside or outside the UK. UK visa decisions can take different lengths of time, and priority services may be available, so check the latest processing estimate on GOV.UK before applying. You will also need time to gather documents, arrange accommodation and travel, and complete tasks such as registering with a GP after arrival. If your circumstances are complicated, consider advice from an immigration adviser regulated by the relevant UK authority.