You can apply for a Standard Visitor visa if you want to visit the UK:
for leisure, for example on holiday or to see your family and friends
for business, or to take part in sports or creative events
for another reason, for example to receive private medical treatment
The Standard Visitor visa has replaced the:
Family Visitor visa
General Visitor visa
Child Visitor visa
Business Visitor visa, including visas for academics, doctors and dentists
Sports Visitor visa
Entertainer Visitor visa
Prospective Entrepreneur visa
Private Medical Treatment Visitor visa
Approved Destination Status (ADS) visa
Your application will not be accepted and you will not get a refund if you have the right of abode in the UK (for example you’re a British citizen). You need to apply for a certificate of entitlement instead.