There is no application process specifically for American-British dual nationality. Both countries allow dual citizenship and US citizens who are granted British Citizenship will automatically have their dual citizenship status recognized in both countries. So, all you need to do is to apply to become a UK national.
Can a dual citizen use either passport?
You can use whichever passport is more convenient for leaving country A, and whichever passport is more convenient for arriving in country B. They do not have to be the same passport. But you must enter and leave a country on the same passport.
Can a US citizen have dual citizenship in another country?
Yes, with conditions. If you have dual citizenship from birth or have become a citizen of another country, even after having U.S. citizenship, then U.S. law, even going back to the Constitution, offers you the right to keep both citizenships for life. This assumes that the second country has no law requiring you to renounce a previous citizenship.
Can a US expat claim tax credits in the UK?
The penalties for tax evasion for expats are steep to say the least. To claim a provision in the United States – UK Tax Treaty (besides claiming US tax credits), expats should use IRS form 8833. A separate agreement called a Totalization Agreement allows US expats in the UK not to pay social security taxes to both the US and UK governments.
Can a UK citizen work in another country?
Read the guidance on pensions for UK nationals moving to the EU, EEA or Switzerland. If you live or work in another country, you might be able to contribute towards that country’s State Pension scheme. If you’ve lived or worked in another country in the past, you might be eligible for that country’s state pension and a UK State Pension.
Can a British citizen become a citizen of a second country?
In general, there is no restriction on a U.K. citizen to become a citizen of a second country. Unlike some other embassies with whom I talked, the U.K. is a bit stricter regarding what happens to a U.K. citizen if they assume citizenship in a country that requires renouncing any other nationality.