British Overseas Territories citizen in the context of Tristan Archipelago

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.

Tristan da Cunha (/ˌtrɪstən də ˈkuːn(j)ə/), colloquially Tristan, is a remote group of volcanic islands in the South Atlantic Ocean. It is one of three constituent parts of the British Overseas Territory of Saint Helena, Ascension and Tristan da Cunha, with its own constitution.

The territory consists of the inhabited island Tristan da Cunha, which has a diameter of roughly 11 kilometres (6.8 mi) and an area of 98 square kilometres (38 sq mi); the wildlife reserves of Gough Island and Inaccessible Island; and the smaller, uninhabited Nightingale Islands. As of October 2018, the main island had 250 permanent inhabitants, who all hold British Overseas Territories citizenship. The other islands are uninhabited, except for the South African personnel of a weather station on Gough Island.

The British Nationality (Falkland Islands) Act 1983 (1983 c. 6) is an Act of Parliament passed by the Parliament of the United Kingdom on 28 March 1983. The purpose of the Act was to grant British citizenship to residents of the Falkland Islands, a British Overseas Territory in the South Atlantic.

Under the British Nationality Act 1981, a resident of the Falkland Islands was classed as a British Dependent Territories citizen (BDTCs) unless they also had a connection with the United Kingdom itself (such as through having a UK-born parent or grandparent). This meant that Falklands-born British Dependent Territories citizens were restricted in their right to enter and stay in the UK.

British National (Overseas), abbreviated as BN(O), is a class of British nationality associated with the former colony of Hong Kong. The status was acquired through voluntary registration by individuals with a connection to the territory who had been British Dependent Territories citizens (BDTCs) before the handover to China in 1997. Registration for BN(O) status was limited to the 10-year period preceding the transfer as a transitional arrangement for former BDTCs; current residents cannot newly acquire this nationality.

BN(O)s are British nationals and Commonwealth citizens, but not British citizens. They are subject to immigration controls when entering the United Kingdom and do not have automatic right of abode there or in Hong Kong, but all BN(O)s would have had permanent resident status in Hong Kong when they acquired this nationality. Following the Chinese government's imposition of controversial national security law on Hong Kong in 2020, the UK has allowed BN(O)s and their dependent family members to apply for a renewable 5-year residence visa since 31 January 2021.

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.