Marriage visit visa UK
If you are a US citizen considering getting married in the UK, you may need to apply for a Marriage Visitor Visa. You will need a Marriage Visitor Visa UK if your partner is not a British citizen or if the two of you are intending to live in the US after your wedding.
The Marriage Visit Visa UK is part of the Standard Visitor Visa route. It can be granted for up to six months and requires a great deal of evidence. Recently, the Home Office has been strict in granting Visitor Visas, stating that not enough evidence has been given. You will need to give evidence of your wedding plans and prove that you intend to leave the country once your visa expires.