Registering a Child as a British Citizen after Birth Abroad to a British Citizen By Descent

: Written by: Arshad Mahmood; Last Updated: 03 May 2026

Under Section 3(2) of the British Nationality Act 1981, you can register your child born outside the UK if one of the parents of the child is a British Citizen by descent and has lived in the UK or a British overseas territory for 3 years continuously, any time before the date of birth of the child. The parent in question, who is a British Citizen by descent, must not have been absent from the UK or a British overseas territory for more than 270 days during the relevant 3-year period of residence in the UK or a British overseas territory. An application under Section 3(2) is made using the MN1 application form.

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Legal Framework for Registering a Child as a British Citizen under Section 3(2) of BNA 1981

Section 3(2) of the British Nationality Act 1981 provides as follows:

"(2) A person born outside the United Kingdom [F1and the qualifying territories] shall be entitled, on an application for his registration as a British citizen made [F2while he is a minor], to be registered as such a citizen if the requirements specified in subsection (3) or, in the case of a person born stateless, the requirements specified in paragraphs (a) and (b) of that subsection, are fulfilled in the case of either that person’s father or his mother (“the parent in question”).

(3) The requirements referred to in subsection (2) are—

(a) that the parent in question was a British citizen by descent at the time of the birth; and

(b) that the father or mother of the parent in question—

(i) was a British citizen otherwise than by descent at the time of the birth of the parent in question; or

(ii) became a British citizen otherwise than by descent at commencement, or would have become such a citizen otherwise than by descent at commencement but for his or her death; and

(c) that, as regards some period of three years ending with a date not later than the date of the birth—

(i) the parent in question was in the United Kingdom [or a qualifying territory] at the beginning of that period; and

(ii) the number of days on which the parent in question was absent from the United Kingdom [and the qualifying territories] in that period does not exceed 270."

A child will qualify under this section if:

they were born outside the UK
either of the child’s parents was a British citizen by descent at the time of the child’s birth
the mother or father of that parent (the child’s grandparent) became, or but for their death would have become, a British citizen otherwise than by descent, either:
- on 1 January 1983
- at the time of the parents’ birth

The British citizen by descent parent must have lived in the UK (or, if the child was born on or after 21 May 2002, in a British overseas territory) for a continuous period of 3 years at any time before the child’s birth. During that period, they should not have absences exceeding 270 days. The application must be made whilst the child is under 18 years of age. The 3-year residence requirement for the parent does not apply if the child is stateless.

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Our expert team of nationality law solicitors in London can represent you in your application for registration as a British Citizen and carry out all the work on your British Citizenship application until a decision on your application is received from the Home Office UKVI. As part of our professional legal services in relation to your application for registration as a British Citizen, our specialist team of immigration solicitors will carry out the following immigration casework:

We will assess your child's eligibility for registration as a British Citizen by considering all the relevant information, including past immigration history.
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We will advise you on the list of documents to be submitted in support of your child's application for registration as a British Citizen.
We will assess all the supporting documents to ensure that the documents you provide satisfy the Home Office UKVI requirements for registration as a British Citizen.
We will complete the relevant application form online for your child's registration as a British citizen, submit it, help you pay the Home Office UKVI fee for the application, and schedule your child's appointment with the application centre for the enrolment of your child's biometrics.
We will prepare a detailed cover letter in support of the application, explaining your child's eligibility for registration as a British Citizen by referring to all relevant information, documents, laws, and requirements.
We will upload all supporting documents online for consideration in support of your child's application, including our cover letter.
We will carry out all the work on your child's application for registration as a British Citizen until we receive a decision from the Home Office UKVI.

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