Applying for British Naturalisation UK

Maximise your chances of a successful British Naturalisation application with our Application Package

Naturalisation is the process of becoming a citizen of another country. Applying for British Naturalisation in the UK will mean you can live and work anywhere in the UK free from immigration controls. If you are British by descent, you may be able to simply register for British Naturalisation UK, but otherwise, you need to apply for British Naturalisation.

If you are a foreign national who has resided in the UK for five years or more and you have held Indefinite Leave to Remain (ILR) for a minimum of one year, you can apply for naturalisation as a British Citizen. You can also apply if you are married to a British Citizen, provided you have lived for a minimum of three years in the UK and hold Indefinite Leave to Remain (ILR).

Our team of legal advisers can help you on your journey towards becoming a British Citizen. We will ensure you are eligible for British Naturalisation and ensure you are that you a prepared for the Life in the UK test and English Language requirements


Am I eligible for UK British Naturalisation?

In order to make your British naturalisation application, you must meet the following criteria:

  • Be 18 years-of-age or over at the time of your application
  • Demonstrate good character, which means you cannot have a criminal record
  • Granted Indefinite Leave to Remain in the UK, or have EEA Permanent Residence
  • Not have broken any immigration laws, including overstaying any visa
  • Be able to speak English, Welsh or Scottish Gaelic
  • Meet the residential qualifying period of five years (or three years as a spouse/civil partner of a British Citizen)

During the application, you must be able to demonstrate an adequate knowledge of UK Life and the English Language.

How do I start the Naturalisation application?

Your Naturalisation application can only be completed by post, so you will need to gather all of your supporting documents in advance of your Naturalisation application. You will need to complete Form AN, ‘Application for Naturalisation as a British Citizen’, which is 30 pages long and includes guidance notes and an accompanying booklet.

Before completing your Naturalisation application, you may need to complete an IELTS Language test and the Life in the UK test. You will also need to gather your travel details for the past five years, so it’s worth gathering this information in advance of your application.

You should make a copy of your completed Naturalisation application before submitting it by post. Once you have submitted it, the UK Home Office will complete checks on your application, including looking into your criminal record to see if there is any reason you wouldn’t be eligible for British Naturalisation UK. If approved, you will be invited to a Citizenship ceremony where you will be presented with a Certificate of Naturalisation. After this, you will be able to apply for a British Passport, which is the most popular proof of ID for British Citizens.

How long does British Natualisation UK take?

British Naturalisation processing times can vary. After sending your application it can take up to four weeks to receive confirmation. After that, a decision on your Naturalisation application will usually take around six months.

You may be invited to attend an interview and you will need to speak without an interpreter during this process. After you have received your Certificate of Citizenship, you can apply for your first British passport.

How can IAS help?

A British Naturalisation application can be very complex and often very stressful. At IAS, our team of specialist immigration lawyers are dedicated to relieving this stress.

We will check your eligibility for British Naturalisation and support you throughout your application process. This will include:

  • checking that your documents are sufficient for your application;
  • providing an accompanying in-depth Letter of Representation on the advantages of your application. This letter will also refer to relevant UK immigration laws that support your case;
  • managing interactions with the Home Office during your application;
  • ensuring that each part of your application form is completed using your lawyer’s expert knowledge.

We will closely assist you with every stage of your British Naturalisation UK application. We will also ensure that you are prepared for the Life in the UK test and that you meet the English Language requirements to become a British Citizen.

Contact us today to begin your application for British Naturalisation by speaking to one of our accomplished advice lawyers.

Our British Naturalisation Packages

Advice Package

Comprehensive immigration advice tailored to your circumstances and goals


Application Package

Designed to make your visa application as successful, smooth and stress-free as possible


Fast Track Package

Premium application service that ensures your visa application is submitted to meet your deadline


Appeal Package

Ensure you have the greatest chance of a successful appeal. We will represent you in any hearings/tribunals


A few of

our experienced

immigration lawyers

Case studies

We are proud to have changed lives for the better. Here are some of their stories:

Asis: EEA Free Movement

Asis, a Spanish national, was offered employment in the UK but was unsure whether or not he would be able to bring his wife and children with him when he… Read More

Tobin: EEA Permanent Residency Card

Tobin, a German National, split his working days between the UK and Germany. However, due to Brexit, Tobin was unsure about his ability to work in the UK in the… Read More

Melissa’s Daughter’s British Citizenship

Melissa and her child are Filipino nationals who came to the UK to join Melissa’s husband.
Complications with their initial application and insufficient information being provided resulted in her child’s… Read More

Derek: Fiance Visa Application Assistance

Derek is a US national who is in a long-distance relationship with his fiance, who is based in the UK. He contacted IAS for advice on how to join his… Read More

Working in the UK after Brexit

Gosia, an EEA national, wanted to tour the UK while seeking work, however, she was unsure if she was permitted to do so.
Gosia contacted IAS and arranged a time… Read More

Jaibao: Family Visits to the UK

Jiabao was worried her family from Hong Kong would not be able to attend her wedding in the UK. However, after she contacted IAS and had a Skype advice session… Read More

Latest reviews


Excellent Service

The lovely Danielle helped me with a very long and, at times, confusing process of acquiring British Citizenship. I used… Read More
Ralph M
From the very first contact, the advice given was helpful and the ensuing meetings were prompt and professionally carried out… Read More

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