You can apply for a Standard Visitor visa if you want to visit the UK for leisure, e.g. on holiday or to see your family and friends, for business, or to take part in sports or creative event and for another reason, such as to receive private medical treatment.
Within this visa you can do the following subject to the visitor rules and immigration rules and guidelines:
You can usually stay in the UK for up to 6 months. You might be able to stay for longer if:
If you can prove you need to visit the UK regularly over a longer period, you can apply for a visa that lasts 2, 5 or 10 years. You can stay for a maximum of 6 months on each visit. If you’re under 18 years old when you apply, your long-term visit visa will only be valid for up to 6 months after you turn 18.