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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 England, Wales, Scotland and Northern Ireland, as well as the Crown dependencies, comprising 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 British Empire. 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.
All individuals born in the British Islands prior to 1 January 1983 were automatically granted British citizenship by birth ( jus soli), irrespective of their parents' nationalities. Since that date, birthright citizenship in those territories has been limited to children with at least one parent who is either a British citizen or holds settled status in the United Kingdom ( jus sanguinis). Foreign nationals may apply to naturalise as British citizens after fulfilling a minimum residence requirement, typically five years, and obtaining settled status.
The United Kingdom was formerly a member of the European Union (EU), and during its membership, British citizens were also EU citizens. This conferred automatic and permanent rights to live and work in any EU or European Free Trade Association (EFTA) country, along with the right to vote in elections to the European Parliament. Although the United Kingdom left the EU in 2020 following Brexit, British citizens retain permanent rights to live and work in the Republic of Ireland through the Common Travel Area arrangement.
The other four categories are residual nationality classes that generally cannot be acquired., at para. 19. BOCs are people connected with former British colonies who have no close ties to the UK or overseas territories. BN(O)s are Hong Kong residents who voluntarily registered for this status before the territory's transfer to China in 1997. British subjects hold their status through a connection either to former British Raj or to what became the Republic of Ireland, as they existed before 1949. British protected persons come from areas controlled by the British Empire that were never formally incorporated as Crown territory; this includes , protected states, mandated territories, and Indian .
Prior to 1708, foreigners could only be naturalization through Acts of Parliament. Protestantism fleeing religious persecution in mainland Europe were allowed to naturalise as subjects in 1708, but this was quickly repealed in 1711 in response to the number of migrants exercising that ability. A standard administrative process was not introduced until 1844, when applicants were first able to acquire naturalisation grants from the Home Office. Despite the creation of this pathway, personalised naturalising legislation continued to be enacted until 1975.
The monarch could personally make any individual a subject by royal prerogative. By this method, a foreigner became a denization – although they were no longer considered an alien, they could not pass subject status to their children by descent and were barred from Crown service and public office. This mechanism was no longer used after 1873.
Until the mid-19th century, it was unclear whether nationality regulations in the United Kingdom were applicable elsewhere in the British Empire. Individual colonies had each developed their own procedures and requirements for naturalisation, granting subject status at the discretion of the local governments. In 1847, Parliament formalised a clear distinction between subjects who were naturalised in the UK and those who became British subjects in other territories. Individuals who naturalised in the UK were deemed to have received the status by imperial naturalisation, which was valid throughout the Empire. Those naturalising in colonies were said to have gone through local naturalisation and were given subject status valid only within the relevant territory; a subject who locally naturalised in Canada was a British subject there, but not in England or New Zealand. When travelling outside of the Empire, British subjects who were locally naturalised in a colony were still entitled to imperial protection.
Certain territories that came under British jurisdiction were not formally incorporated as Crown territory proper. These included protectorates, protected states, mandated territories, and Indian princely states. Because domestic law treated these areas as foreign territory, birth in one of these areas did not automatically confer British subject status. Instead, most people associated with these territories were designated as British protected persons. British protected persons were treated as aliens in the United Kingdom, but both British subjects and protected persons could be issued . Protected persons could not travel to the UK without first requesting permission, but were afforded the same consular protection as British subjects when travelling outside of the Empire.
The 1914 regulations codified the doctrine of coverture into imperial nationality law, where a woman's consent to marry a foreigner was also assumed to be intent to Denaturalization; British women who married foreign men automatically lost their British nationality. There were two exceptions to this: a wife married to a husband who lost his British subject status was able to retain British nationality by declaration, and a British-born widow or divorcée who had lost her British nationality through marriage could reacquire that status without meeting residence requirements after the dissolution or termination of her marriage.
By the end of the First World War, the Dominions had exercised increasing levels of autonomy in managing their own affairs and each by then had developed a distinct national identity. Britain formally recognised this at the 1926 Imperial Conference, jointly issuing the Balfour Declaration with all the Dominion heads of government, which stated that the United Kingdom and Dominions were autonomous and equal to each other within the British Commonwealth of Nations. Full legislative independence was granted to the Dominions with passage of the Statute of Westminster 1931.
Women's rights groups throughout the Empire pressured the imperial government during this time to amend nationality regulations that tied a married woman's status to that of her husband. Because the government could no longer enforce legislative supremacy over the Dominions after 1931 and wanted to maintain a strong constitutional link to them through the common nationality code, it was unwilling to make major changes without unanimous agreement among the Dominions on this issue, which it did not have. Imperial legal uniformity was nevertheless eroded during the 1930s; New Zealand and Australia amended their laws in 1935 and 1936 to allow women denaturalised by marriage to retain their rights as British subjects, and Ireland changed its regulations in 1935 to cause no change to a woman's nationality after her marriage.
At its inception, the Irish Free State gained independence as a Dominion within the British Empire. Imperial legislation at the time dictated that although individual Dominions could define a citizenship for their own citizens, that citizenship would only be effective within the local Dominion's borders. A Canadian, New Zealand, or Irish citizen who travelled outside of their own country would have been regarded as a British subject. This was reinforced by Article 3 of the 1922 Free State Constitution, which stated that Irish citizenship could be exercised "within the limits of the jurisdiction of the Irish Free State".
When Free State authorities were first preparing to issue in 1923, the British government insisted on the inclusion of some type of wording that described the holders of these passports as "British subjects". The two sides could not reach agreement on this issue and when the Irish government began issuing passports in 1924, British authorities refused to accept these documents. British consular staff were instructed to confiscate any Irish passports that did not include the term "British subject" and replace them with British passports. This situation continued until 1930, when Irish passports were amended to describe its holders as "one of His Majesty's subjects of the Irish Free State". Despite these disagreements, the two governments agreed not to establish border controls between their jurisdictions and all Irish citizens and British subjects continued to have the ability to move freely within the Common Travel Area. Although Irish citizens have not been considered British subjects under Irish law since 1935, the British government continued to treat virtually all Irish citizens as British subjects, except for those who had acquired Irish citizenship by naturalisation since the Free State had not incorporated part II of the British Nationality and Status of Aliens Act 1914 (4 & 5 Geo. 5. c. 17) into its legislation.
The British Nationality Act 1948 redefined British subject as any citizen of the United Kingdom, its colonies, or other Commonwealth countries. Commonwealth citizen was first defined in this Act to have the same meaning. This alternative term was necessary to retain a number of newly independent countries in the Commonwealth that wished to become republics rather than preserve the monarch as head of state. The change in naming also indicated a shift in the base theory to this aspect of British nationality; allegiance to the Crown was no longer a requirement to possess British subject status and the common status would be maintained by voluntary agreement among the various members of the Commonwealth.
British subject/Commonwealth citizen status co-existed with the citizenships of each Commonwealth country. A person born in Australia would be both an Australian citizen and a British subject. British subjects under the previous meaning who held that status on 1 January 1949 because of a connection with the United Kingdom or a remaining colony became Citizens of the United Kingdom and Colonies (CUKC). CUKC status was the principal form of British nationality during this period of time., at para. 101.
There was also a category of people called British subjects without citizenship. Irish citizens who fulfilled certain requirements could file formal claims with the Home Secretary to remain British subjects under this definition. Additionally, those who did not qualify for CUKC status or citizenship in other Commonwealth countries, or were connected with a country that had not yet defined citizenship laws, would transitionally remain British subjects in this group.
The British Nationality Act 1948 unintentionally excluded certain British subjects associated with Ireland from acquiring CUKC status. The wording of that law did not take into account the 24-hour period during which Northern Ireland was part of the Irish Free State in 1922. Individuals born before 1922 in the area that became the Republic of Ireland to fathers also born in that area but were domiciled in Northern Ireland on Irish independence had nevertheless automatically acquired Irish citizenship. The Ireland Act 1949 specifically addresses this by deeming any person in such circumstances who had never registered for Irish citizenship and had not permanently resided in the Republic between 10 April 1935 and 1 January 1949 as a CUKC and having never ceased to be a British subject.
In other parts of the Commonwealth, British subjects already did not have an automatic right to settle. Australia, Canada, New Zealand, and South Africa had immigration restrictions in place for British subjects from outside their jurisdictions targeted at non-white migrants since the late 19th century. After 1949, non-local British subjects under the new definition who were resident in these independent Commonwealth countries continued to retain certain privileges. This included eligibility to vote in elections, for preferred paths to citizenship, and for welfare benefits. British subjects were eligible to vote in New Zealand until 1975 and Australia until 1984 (though subjects on the electoral roll in that year are still eligible). In Canada, voting eligibility was revoked at the federal level in 1975, but not fully phased out in provinces until 2006. All Commonwealth citizens remain eligible to vote and stand for public office in the UK.
Not all British nationals were EU citizens. Only British citizens, British Overseas Territories citizens connected with Gibraltar, and British subjects under the 1981 Act who held UK right of abode were defined as UK nationals for the purposes of EU law. Although the Crown dependencies were part of the European Union Customs Union, free movement of persons was never implemented in those territories. Following the UK's Brexit on 31 January 2020, British nationals have no longer been EU citizens. Despite this, British citizens continue to have free movement in Ireland as part of the preexisting arrangement for the Common Travel Area.
While the UK was a member state of the EU, Cypriot and Maltese citizens held a particularly favoured status there. While non-EU Commonwealth citizens continued to need a residence visa to live in the UK, Cypriot and Maltese citizens were able to settle there and immediately hold full rights to political participation due to their status as both Commonwealth and EU citizens. This group of EU citizens (along with Irish citizens) domiciled in the UK were able to vote in the 2016 United Kingdom European Union membership referendum while all other non-British EU citizens could not.
Children born in the UK to a resident Irish citizen at any time are always British citizens at birth. Since 1983, the status of a child born in the UK is dependent on whether their parents held British citizenship or settled status at the time of their birth. Irish citizens residing in the UK are deemed to hold settled status upon arrival.
Regulations concerning settled status for other European Union (EU), European Economic Area (EEA) and Switzerland citizens have changed greatly over time, affecting the status of their children born during the different regulatory periods. EU/EEA citizens living in the UK before 2 October 2000 were automatically considered to be settled. Between that date and 29 April 2006, EU/EEA citizens were required to apply for permanent residency. Swiss citizens became subject to the same regulations on 1 June 2002. From 30 April 2006 until 30 June 2021, EU/EEA and Swiss citizens living in the UK for at least five years automatically received permanent resident status. Permanent resident status for these citizens expired on 1 July 2021, after which they have been required to hold settled status through the European Union Settlement Scheme or another path.
Foreign nationals may naturalise as British citizens after residing in the UK for more than five years and possessing indefinite leave to remain (ILR) for at least one year. The residency requirement is reduced to three years if an applicant is married to a British citizen and they immediately become eligible for naturalisation after receiving ILR or equivalent. Applicants must demonstrate proficiency in the English language, Welsh language, or Scottish Gaelic languages and pass the Life in the United Kingdom test.
Individuals born outside of the territories are BOTCs by descent if either parent is a BOTC otherwise than by descent. Unmarried fathers cannot automatically pass on BOTC status, and it would be necessary for them to register children as BOTCs. If a parent is a BOTC by descent, additional requirements apply to register children as BOTCs. Parents in Crown service who have children abroad are exempted from these circumstances, and their children would be BOTCs otherwise than by descent, as if they had been born on their home territory.
Foreigners and non-BOTC British nationals may naturalise as British Overseas Territories citizens after residing in a territory for more than five years and possessing belonger status or permanent residency for more than one year. The residency requirement is reduced to three years if an applicant is married to a BOTC. All applicants for naturalisation and registration are normally considered by the governor of the relevant territory, but the Home Secretary retains discretionary authority to grant BOTC status. Since 2004, BOTC applicants aged 18 or older are required to take an oath of allegiance to the Sovereign and loyalty pledge to the relevant territory during their citizenship ceremonies.
All British Overseas Territories citizens other than those solely connected with Akrotiri and Dhekelia became British citizens on 21 May 2002, and children born on qualified overseas territories to dual BOTC-British citizens since that date are both BOTCs and British citizens otherwise than by descent. Prior to 2002, only BOTCs from Gibraltar and the Falkland Islands were given unrestricted access to citizenship. BOTCs naturalised after that date may also become British citizens by registration at the discretion of the Home Secretary. Becoming a British citizen has no effect on BOTC status; BOTCs may also simultaneously be British citizens.
Following the Chagos Archipelago handover agreement, the British government is also due to introduce legislation to implement the agreement, including amending the British Nationality Act 1981 to reflect that the British Indian Ocean Territory is no longer an overseas territory following Parliament's ratification of the treaty.
After the Nationality, Immigration and Asylum Act 2002 came into force British nationals could be deprived of their citizenship if and only if the Secretary of State was satisfied they were responsible for acts seriously prejudicial to the vital interests of the United Kingdom or an Overseas Territory.
This was extended under the Immigration, Asylum and Nationality Act 2006: people with dual nationality who are British nationals can be deprived of their British citizenship if the Secretary of State is satisfied that "deprivation is conducive to the public good", or if nationality was obtained by means of fraud, false representation or concealment of a material fact. Between 2006 and the end of 2021 at least 464 people have had their citizenship removed by the government since the law was introduced. There is a right of appeal. This provision has been in force since 16 June 2006 when the Immigration, Nationality and Asylum Act 2006 (Commencement No. 1) Order 2006 brought it into force. Loss of British nationality in this way applies also to dual nationals who are British by birth. The Secretary of State may not deprive a person of British nationality, unless obtained by means of fraud, false representation or concealment of a material fact, if they are satisfied that the order would make a person stateless.
This provision was again modified by the Immigration Act 2014 so as not to require that a third country would actually grant nationality to a person; British nationality can be revoked if "the Secretary of State has reasonable grounds for believing that the person is able, under the law of a country or territory outside the United Kingdom, to become a national of such a country or territory."
The powers to strip citizenship were initially very rarely used. Between 2010 and 2015, 33 dual nationals had been deprived of their British citizenship. In the two years to 2013 six people were deprived of citizenship; then in 2013, 18 people were deprived, increasing to 23 in 2014. In 2017, over 40 people had been deprived as of July (at this time increased numbers of British citizens went to join "Islamic State" and then tried to return).
The Home Office does not issue information on these cases and is resistant to answering questions, for example under the Freedom of Information Act 2000. It appears that the government usually waits until the person has left Britain, then sends a warning notice to their British home and signs a deprivation order a day or two later. Appeals are heard at the highly secretive Special Immigration Appeals Commission (SIAC), where the government can submit evidence that cannot be seen or challenged by the appellant.
Home Secretary Sajid Javid said in 2018 that until then deprivation of nationality had been restricted to "terrorists who are a threat to the country", but that he intended to extend it to "those who are convicted of the most grave criminal offences". The acting director of Liberty responded "The home secretary is taking us down a very dangerous road. ... making our criminals someone else's problem is ... the government washing its hands of its responsibilities ... Banishment belongs in the dark ages."
A Nationality and Borders Bill was introduced to the British House of Commons in July 2021, sponsored by the Home Office under Home Secretary Priti Patel. In November 2021, an amendment to the Bill was introduced which, if passed, would allow people to be deprived of British citizenship without being given notice. At the time the Home Office reiterated its position on citizenship: "British citizenship is a privilege, not a right".
Citizenship ceremonies are normally organised by:
Persons from what is now the Republic of Ireland born before 1949 reclaiming British subject status under section 31 of the 1981 Act do not need to attend a citizenship ceremony. If such a person subsequently applies for British citizenship by registration or naturalisation, attendance at a ceremony is required.
For those who applied for British citizenship before 2004:
British citizenship ceremonies
From 1 January 2004, all new applicants for British citizenship by naturalisation or registration aged 18 or over if their application is successful must attend a citizenship ceremony and either make an affirmation or take an oath of allegiance to the monarch, and make a pledge to the UK.
See also
Notes
Sources
(2025). 9780333802663, Palgrave Macmillan. ISBN 9780333802663
Legislation and case law
External links
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