Does applying for US citizenship require me to denounce my UK citizenship?

[e&z 7]

I have googled this but haven't found any clear answers.

We are currently applying for a K-1 visa so I know that this would all be a long time down the road but if I decided eventually to apply for US citizenship would I be able to keep my UK passport/citizenship and become a dual citizen?

[kzielu 1,149]

US doesn't care so the question is - does UK allow it. My guess based on fellow brits here at work is no - you can have both.

[Nich-Nick 3,354]

I have googled this but haven't found any clear answers.

We are currently applying for a K-1 visa so I know that this would all be a long time down the road but if I decided eventually to apply for US citizenship would I be able to keep my UK passport/citizenship and become a dual citizen?

Yes, you can keep your UK passport. You would have to actually file a form and pay a fee to the UK government if you wanted to give up your British citizenship. They never mark you off their roles, so to speak.

You will have to take an oath at your ceremony that you renounce allegiance to all others, but neither the US or UK require you to give up your passport or citizenship. While in the US, you are expected to be American and use your American passport when returning from abroad. But you can use your British passport, for example, to enter the UK or travel around the entire EU.

Oath--

"I hereby declare, on oath, that I absolutely and entirely renounce and abjure all allegiance and fidelity to any foreign prince, potentate, state, or sovereignty, of whom or which I have heretofore been a subject or citizen; that I will support and defend the Constitution and laws of the United States of America against all enemies, foreign and domestic; that I will bear true faith and allegiance to the same; that I will bear arms on behalf of the United States when required by the law; that I will perform noncombatant service in the Armed Forces of the United States when required by the law; that I will perform work of national importance under civilian direction when required by the law; and that I take this obligation freely, without any mental reservation or purpose of evasion; so help me God."

Edited August 11, 2014 by Nich-Nick

[e&z 7]

Thank you so much!