New Zealand High Commission London, United Kingdom
Applying for British Citizenship
If you are over 18 and have been living in the United Kingdom for the last five years (or three years if you are married to, or a civil partner of, a British citizen) you may be able to apply for naturalisation as a British citizen.
Holding Dual New Zealand - United Kingdom Citizenship
There are no restrictions to New Zealand citizens also holding citizenship of another country. This does not mean, however, that all countries allow dual nationality or for citizens to hold more than one passport.
We advise all New Zealanders looking to take up the citizenship of another country to contact the appropriate government agency to determine the requirements. In the United Kingdom this agency is the UK Border Agency.