You can apply for a Standard Visitor visa if you want to visit the UK:
The Standard Visitor visa has replaced the:
If you visit the UK on business
You can apply for a Standard Visitor visa if you want to visit the UK for business-related activities, eg:
What you can and can’t do
How long you can stay
You can usually stay in the UK for up to 6 months.
You might be able to stay for longer if:
You might be able to get a visit visa for up to 30 days if you’re a visitor under the Approved Destination Status (ADS) Agreement.
Long-term visit visas
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.
UK Standard Visit Visa - Business/Tourism/Family