A short-term UK Standard Visitor visa allows you to visit the UK for up to six months for tourism, family visits, business meetings, or medical treatment. This option is suited for travellers planning a single trip or occasional visits. A long-term Standard Visitor visa, on the other hand, is issued for two, five, or ten years and is ideal for frequent visitors who travel to the UK regularly. However, even with a long-term visa, you cannot stay longer than six months per entry. The difference lies mainly in convenience and validity, as entry rules remain the same.