Right of abode in the United Kingdom in the context of "British subjects"

The primary legislation governing nationality in the United Kingdom is the British Nationality Act 1981, which came into force on 1 January 1983. Its provisions apply to the British Islands (comprising the United Kingdom (England, Wales, Scotland and Northern Ireland), and the Crown dependencies, of Jersey, Guernsey and the Isle of Man) and the 14 British Overseas Territories.

The six classes of British nationality provide differing levels of civil and political rights, reflecting the United Kingdom's historical legacy as a colonial power. The primary form is British citizenship, which is linked to the British Islands and confers full rights. Those connected with a current overseas territory are classified as British Overseas Territories citizens (BOTCs), and since 2002, nearly all BOTCs, except those associated solely with Akrotiri and Dhekelia, have also held British citizenship. Other residual forms of British nationality generally linked to former colonies and now largely closed to new acquisition include the statuses of British Overseas citizen, British subject, British National (Overseas) and British protected person. These categories do not confer automatic right of abode in the United Kingdom and offer limited entitlements.

Indefinite leave to remain (ILR) is an immigration status granted to a person who does not hold the right of abode in the United Kingdom (UK), but who has been admitted to the UK without any time limit on their stay and who is free to take up employment, engage in business, self-employment, or study. When indefinite leave is granted to persons outside the United Kingdom it is known as indefinite leave to enter (ILE).

It approximates to the concept of permanent residency (PR) in other countries, but that term had a different and specific meaning under the EU law on freedom of movement while the UK was in the EU. ILR is granted under UK domestic legislation, PR was (before Brexit) acquired automatically, if certain conditions were met, under EU law.