Guidance

Acquisition of British citizenship: Irish citizens

This guidance tells caseworkers about registration as a British citizen for Irish citizens, under section 4AA of the British Nationality Act 1981.

• From: UK Visas and Immigration
• Published: 9 July 2025

Documents

Acquisition of British citizenship: Irish citizens

PDF, 230 KB, 12 pages

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Details

Guidance on how to consider applications for registration under section 4AA of the British Nationality Act 1981.

Section 4AA of the British Nationality Act 1981 was introduced by the British Nationality (Irish Citizens) Act 2024. It is a registration route for Irish citizens who have been resident in the UK for 5 years.

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Published 9 July 2025