Marriage Visitor Visa
The UK Marriage Visit visa is designed to accommodate those who want to wed or form a civil partnership with a foreign national in the UK. For instance, the fiancée of a person with a temporary visa for the UK (such as a student visa holder or work visa holder) The UK fiancé visa should not be confused with this visa.
You should apply for a fiancé visa if you want to enter the UK with the intention of marrying a citizen of that country. You can extend your leave in the UK to that of a spouse with the help of a fiancé visa.
This visa may be ideal if your only goal is to get married in the UK and you have no plans to settle or stay there.