Post-1983 British Citizen by Birth in UK

Automatic BC at birth under s.1(1) requires two cumulative facts at the moment of birth: (1) birth in the UK on or after 1 January 1983, and (2) at least one parent being either a BC or 'settled' (s.50(2): ordinarily resident in the UK without any immigration-law restriction on the period of stay). Status is assessed at the time of birth; a parent who only later becomes BC or settled does not confer automatic citizenship (the child's route is then registration under s.1(3)). Either parent qualifies. Parentage is fixed by s.50(9)-(9A): the mother is the woman who gives birth; the father is the birth mother's husband/male civil partner, an HFEA-deemed parent, or a person meeting prescribed paternity-proof requirements.

Because s.1(1) confers citizenship automatically by operation of law, there is no 'application' to acquire it; the practical requirement is to EVIDENCE the status, typically via a UK passport or a no-time-limit confirmation. The applicant must establish: place of birth (UK birth certificate); identity; and the qualifying parental status at the time of birth (parent's UK passport/naturalisation/registration certificate, or proof the parent was settled at the birth date — e.g. ILR endorsement, EUSS settled-status confirmation, or pre-Roehrig settled documentation). Where parentage relies on s.50(9A), prescribed proof of paternity may be required. No residence, language, good-character, or Life-in-the-UK requirement applies to s.1(1) automatic acquisition (those attach only to naturalisation/registration routes).

No grant is needed: s.1(1) status arises automatically at birth by operation of law, so there is no decision-maker conferring it. The functional process is documentary recognition. The competent authority is the Home Office, exercised through HM Passport Office (for a UK passport, the principal proof) and UK Visas and Immigration. Where status is disputed, a person may apply for a UK passport and, if refused, challenge the refusal; nationality status can ultimately be determined by the courts. There is no nationality 'appeal' for an automatic-acquisition determination as such — it is a question of law and fact about whether the s.1(1) conditions were met at birth. Contrast registration/naturalisation, which are discretionary or entitlement applications decided by the Secretary of State.

Automatic acquisition under s.1(1) attracts NO citizenship fee — citizenship is conferred by operation of law, not by application. The only Home Office charges arise from proving the status: a standard adult UK passport application (the principal evidence of BC status), and optionally a Home Office nationality status document / no-time-limit confirmation. Passport fees are set under separate consular/passport fee regulations, not under the BNA 1981 nationality-fee schedule. The naturalisation/registration fee schedule (e.g. naturalisation GBP 1,709 + GBP 130 ceremony; child registration GBP 1,000; adult registration GBP 1,540, as uprated 8 April 2026) does NOT apply to s.1(1), because those routes involve an application that s.1(1) does not.

Acquisition of British citizenship (BC) by birth in the United Kingdom on or after commencement is governed by British Nationality Act 1981 (c.61) s.1(1): a person born in the UK after commencement is a BC if at the time of the birth a parent is (a) a BC, or (b) settled in the UK. 'Settled' takes the meaning in s.50(2) (per s.1(8)). Commencement was 1 January 1983 (British Nationality Act 1981 (Commencement) Order 1982, SI 1982/933, art.2). The qualifying-territory limb in s.1(1)/(1)(b) was inserted (21.5.2002) by British Overseas Territories Act 2002 (c.8), Sch.1 para.1(2)-(3); SI 2002/1252 art.2. BC is the only nationality category carrying an automatic right of abode (Immigration Act 1971 s.2(1)(a)).