British citizenship offers numerous rights and protections, but it can be revoked under certain circumstances. The concept of deprivation of citizenship has been a topic of considerable debate in recent years, particularly following high-profile cases like that of Shamima Begum.
Table of Contents
In passing the Nationality and Borders Act 2022, the UK government has expanded the grounds on which British citizenship may be removed, raising concerns over the potential for people to lose their citizenship without notice.
This article provides a comprehensive overview of the legal grounds for revoking British citizenship and the possible implications for individuals affected by such decisions.
Key Takeaways
- British citizenship can be revoked on two main grounds: threats to the public good or obtaining it through fraud.
- Individuals involved in terrorism, espionage, or serious organised crime may lose their citizenship if they hold or qualify for another nationality.
- The UK government cannot legally make someone stateless in most cases, but the Nationality and Borders Act 2022 allows revocation without notice under specific conditions.
- Deprivation affects all associated rights, including holding a British passport and remaining in the UK.
- Individuals whose citizenship has been taken away can usually appeal, though national security cases may be heard by a special tribunal with restricted evidence.
Can UK Citizenship Be Revoked?
UK citizenship can be revoked, but it’s rare and only happens under specific legal grounds. The government may remove citizenship if it was obtained fraudulently or if the person is considered a threat to national security. This process is known as “deprivation of citizenship” and must follow strict legal procedures.
Even then, the UK must ensure that the individual will not be made stateless, unless the person has acted in a way seriously prejudicial to UK interests. Dual nationals are more likely to face revocation since they have another nationality to fall back on. Appeals are allowed, and the case can be reviewed in court to ensure fairness and legality.
What Is Deprivation of British Citizenship in the UK?
The revocation of British citizenship, officially termed “deprivation of citizenship,” refers to the legal process by which the UK government strips an individual of their British citizenship.
This action can be taken under specific circumstances outlined in the British Nationality Act 1981, usually for reasons related to national security, serious criminal offences, or fraud in acquiring citizenship.
Once stripped of citizenship, the individual loses all associated rights, including the ability to hold a British passport. If the person resides in the UK, their immigration status is revoked, and they may face deportation. If they are abroad, they are barred from re-entering the UK, and their British passport is invalidated.
Between 2010 and 2018, an average of 19 people per year were deprived of their British citizenship because it was “conducive to the public good.” Fraudulent cases, in comparison, accounted for an average of 17 revocations annually during the same period.
What is the legal process of stripping someone of British Citizenship?
The process of depriving someone of their British citizenship begins when the Home Office determines that there is enough evidence to suggest that the individual obtained their citizenship fraudulently or engaged in behaviour conducive to the public good, such as posing a threat to national security.
The first step is for the Home Secretary to issue a formal notice of intention to deprive the individual of their citizenship. This notice provides a detailed explanation of the reasons for the decision, citing the relevant legal grounds under section 40 of the British Nationality Act 1981. The notice may also include the evidence supporting the case, ensuring that the individual is fully informed about why this decision is being pursued.
Once the notice has been issued, the individual has the right to respond and make representations. This allows them to submit their evidence or arguments opposing the decision. Legal representation can be crucial during this phase to effectively present their response.
If the Home Office still decides to proceed after considering the individual’s representations, it issues a deprivation order. This official order strips the person of their British citizenship. Importantly, this order does not mark the end of the legal process.
The individual has the right of appeal, which typically involves appealing with the Special Immigration Appeals Commission (SIAC). SIAC is an independent body responsible for reviewing such cases, particularly concerning national security issues. The commission ensures that the deprivation is in line with UK law and human rights standards.
The Nationality and Borders Act 2022
Section 10 of the Nationality and Borders Act 2022 changed the notice procedure for citizenship deprivation. It did not replace the substantive grounds in section 40 of the British Nationality Act 1981. The Home Secretary may deprive you of citizenship where deprivation is conducive to the public good, or where registration or naturalisation was obtained through fraud, false representation or concealment of a material fact.
A public-good order generally cannot make you stateless. A limited exception applies where your status resulted from naturalisation, your conduct was seriously prejudicial to specified British interests, and the Home Secretary reasonably believes you can become a national of another country or territory. Statelessness does not prevent deprivation for fraud, although Home Office guidance requires the foreseeable consequences to be considered. Public-good decisions must be made personally by the Home Secretary or, in the Home Secretary’s absence, another Secretary of State.
The 2022 Act permits an order without prior notice if the Secretary of State lacks the information needed to give notice. Notice may also be withheld where the Secretary of State reasonably considers that necessary for national security, investigating or prosecuting organised or serious crime, preventing or reducing a risk to someone’s safety, or the UK’s relationship with another country. For public-good orders, Schedule 4A to the British Nationality Act 1981 requires SIAC oversight of the no-notice decision and periodic reviews of whether late notice should be given. If you contact the Home Office after a no-notice order, written notice must be given as soon as reasonably practicable, stating the order, reasons and appeal right. The right of appeal remains, but the deprivation order continues to have effect while the appeal is pending.
Legal Grounds for Deprivation of British Citizenship
The UK government has the authority to revoke British citizenship in specific cases based on the legal framework outlined in the British Nationality Act 1981. There are two main reasons for this: actions against the public good and obtaining citizenship through fraudulent means.
1. Threat to Public Good
One of the primary reasons the Home Office may revoke citizenship is if it is deemed “conducive to the public good.” This typically applies to individuals involved in activities that pose a national security threat, such as:
- Terrorism
- Espionage
- War crimes
- Serious organised crime
This power is reserved for extreme cases where an individual’s presence or actions are considered harmful to the UK or its territories. However, it has limitations.
The UK must comply with international agreements, such as the United Nations Convention on the Reduction of Statelessness, meaning the government generally cannot revoke citizenship if it would leave the person stateless.
2. Citizenship Obtained Through Fraud
The second legal ground is when British citizenship is obtained through deceitful means. This involves cases where:
- False information was provided during the application process.
- Important facts were deliberately concealed.
For example, if someone misrepresented their identity, background, or eligibility when applying for British citizenship, the Home Office can revoke their citizenship once the fraud is uncovered. The Home Office must prove that the false information influenced the decision to award citizenship.
Both of these legal grounds are subject to appeal, meaning the individual has the right to challenge the decision in court before it becomes final.
How Do I Know If My British Citizenship Is Taken Away?
Usually, when the Home Secretary decides to revoke an individual’s British citizenship, they are required to provide written notice. This notice outlines the decision, the reasons behind it, and informs the person of their right to appeal the decision. The notice is usually delivered directly to the individual, ensuring that they know the action being taken against them.
However, under section 10 of the Nationality and Borders Act 2022, the Home Office can withhold this notice if it is deemed necessary in the interest of national security. In such cases, the person may not be informed beforehand, especially if disclosing the information could compromise national security efforts.
Can You Lose British Citizenship If Born in the UK?
Yes, British citizenship can be revoked even for individuals born in the UK. However, this power is only exercised in cases where the individual holds or has the potential to acquire citizenship in another country.
The UK government generally cannot revoke citizenship if doing so would leave the person stateless, as per international legal obligations.
You may be interested: Dual Nationality and Deprivation of Citizenship: What You Need to Know
Real-Life Examples of Citizenship Revocation
The revocation of British citizenship is rare, but a few high-profile cases have brought the issue into the public spotlight. These include:
Shamima Begum
Shamima Begum travelled to Syria in 2015, aged 15, to align herself with ISIL. On 19th February 2019, the Home Secretary decided to deprive her of British citizenship under section 40(2) of the British Nationality Act 1981, having assessed that she posed a national security threat. SIAC later found that she held Bangladeshi nationality when the decision was made, meaning she was not stateless in law, although the decision left her de facto stateless because she had no reasonable prospect of admission to Bangladesh.
The Supreme Court’s 2021 ruling concerned whether Begum should be allowed to enter the UK to participate in her appeal and how that appeal should proceed. The Court overturned the order permitting her return and held that her appeal should be stayed if she could not pursue it effectively from Syria. SIAC subsequently dismissed her deprivation appeal in February 2023, despite finding a credible suspicion that she had been trafficked for sexual exploitation and an arguable case that UK public bodies had failed to prevent her departure.
The Court of Appeal dismissed her appeal on 23rd February 2024. In August 2024, the Supreme Court refused permission for another appeal because the grounds raised no arguable point of law. Begum applied to the European Court of Human Rights on 5th December 2024. The Court communicated her Article 4 complaint to the UK government on 25th November 2025.
Mohamed Sakr
Mohamed Sakr was born and raised in London to Egyptian parents. The government considered him entitled to Egyptian nationality, although his family said he had never held an Egyptian passport. In September 2010, while Sakr was in Somalia, Home Secretary Theresa May deprived him of British citizenship. The notice sent to his family alleged involvement in “terrorism-related activity” and links to “Islamist extremists”.
Sakr had a statutory right of appeal, but deprivation and exclusion left him without a right to enter the UK, making an effective challenge from Somalia difficult. On 24th February 2012, he was reportedly killed in an alleged US drone strike in Somalia. His case prompted scrutiny of overseas deprivation and its effect on appeal rights. No connection between the deprivation decision, any sharing of UK intelligence and the reported strike has been established publicly.
Others in the Public Good Category
Between 2018 and 2024, the latest period for which complete annual figures were publicly available by September 2026, the Home Secretary made 72 orders depriving people of British citizenship because deprivation was considered “conducive to the public good”. Annual use declined from 21 orders in 2018 and 27 in 2019 to one in 2024.
Although public-good deprivation is used principally in national security and counter-terrorism cases, current Home Office guidance also identifies hostile-state activity, serious organised crime, war crimes and crimes against humanity as conduct that may justify its use.
It is important to note that the published figures count deprivation orders rather than people finally deprived of citizenship: an order may be overturned on appeal. They also do not establish that every person affected already possessed another nationality.
What Happens After Citizenship Is Revoked?
What happens next depends on where the individual is located and whether they have another nationality.
If You Are in the UK
Once citizenship is revoked, your immigration status is automatically cancelled. This means:
- You no longer have the legal right to remain in the UK.
- The Home Office may detain you and begin deportation proceedings.
- You lose access to public services, including healthcare, housing, and benefits.
If You Are Abroad
If you are overseas when your citizenship is revoked:
- Your British passport becomes invalid.
- You cannot legally re-enter the UK.
- You may face difficulties obtaining consular support or travel documentation.
In some cases, the individual may not find out about the revocation until they attempt to travel or access British services.
How do you appeal a citizenship deprivation decision?
If the Home Secretary deprives you of British citizenship under section 40 of the British Nationality Act 1981, you usually have a right of appeal. Your appeal is normally heard by the First-tier Tribunal (Immigration and Asylum Chamber). Where the decision is certified on national security grounds under section 40A, it goes instead to the Special Immigration Appeals Commission, where sensitive evidence can be withheld from you and your own lawyer. A security-cleared special advocate then represents your interests but cannot communicate with you about that closed material once they have seen it.
If you are in the UK, your notice of appeal must reach the tribunal within 14 days of the date the decision notice was sent, under the Tribunal Procedure Rules 2014; if you are outside the UK, the limit is 28 days. A late appeal can be refused unless you give a good reason for the delay, so check the date on your notice first. You can lodge online through the MyHMCTS service, or a solicitor or regulated adviser can run it for you. You may request an oral hearing before a judge, in person or by video link, or ask the tribunal to decide on the documents alone.
When appealing a deprivation order, potential grounds for challenge may include:
- The decision is unlawful or not in accordance with the law: Arguing that the Home Secretary erred in law, acted outside their powers (ultra vires), or failed to follow the correct legal procedures.
- Procedural Unfairness: Highlighting flaws in the decision-making process, such as not being given an adequate opportunity to respond to allegations before the decision was made (as highlighted in recent case law like Kolicaj)
- Factual Errors: Demonstrating that the Home Secretary’s decision was based on incorrect or unsubstantiated facts. For fraud cases, the Home Office must prove on the balance of probabilities that citizenship was obtained dishonestly and that the fraud was material to the grant of citizenship.
- Statelessness: Arguing that the deprivation order would render the individual stateless. While the law has been amended to allow deprivation even if it leads to statelessness for naturalised citizens in certain circumstances (if the Home Secretary has reasonable grounds to believe the person can acquire another nationality), this remains a significant factor for the tribunal to consider, particularly in light of international conventions.
- Human Rights Grounds: Asserting that the deprivation of citizenship and any subsequent removal from the UK would breach the individual’s human rights, for example, the right to private and family life (Article 8 of the European Convention on Human Rights).
- Discretion: Arguing that even if the factual basis for deprivation is met, the Home Secretary wrongly exercised their discretion to deprive citizenship, or failed to properly consider all relevant factors, including the impact on the individual and their family (including the best interests of any children involved).
If your appeal succeeds, the tribunal can find that the discretion should have been exercised differently, and your citizenship can be preserved along with the right to hold a British passport and live in the UK. If it fails, you may face removal where you hold another nationality. Deprivation for fraud under section 40(3) can be made even if it leaves you stateless, while deprivation on “public good” grounds generally cannot, subject to a narrow exception for naturalised citizens who could acquire another nationality. A further appeal on a point of law lies to the Upper Tribunal.
Facing Deprivation of Citizenship? Let Our Experts Help
If you’re facing the possibility of losing your British citizenship, it’s essential to have expert legal support by your side. At Gulbenkian Andonian Solicitors, our experienced team of immigration and nationality law specialists can help guide you through this complex and often stressful process.
We understand the serious implications of deprivation of citizenship on your life and rights, and we are here to ensure that your case is handled with the utmost care and professionalism.
Our legal team consists of some of the best immigration lawyers in London who will be able to thoroughly review your situation, help you understand the legal grounds for the deprivation, and build a strong case for your appeal if necessary. If necessary, we are also ready to represent your interests in appeals at the First-tier Tribunal or the Special Immigration Appeals Commission (SIAC).
With our in-depth knowledge of British citizenship laws and extensive experience with complex cases, we can provide you with expert advice and legal representation to protect your rights and challenge decisions effectively.
FAQs
What are the legal grounds for revoking British citizenship?
Section 40 of the British Nationality Act 1981 allows for the revocation of British citizenship, particularly if it is in the public interest or for national security. This covers situations in which an individual presents a threat to national security or is engaged in significant criminal behaviour.
Can a naturalised citizen lose their British citizenship?
Yes, a naturalised citizen may lose their British citizenship if it is shown that their citizenship was gained via fraud, false representation, or concealment of relevant facts.
Furthermore, they may also be stripped of their British citizenship if they commit acts that are deemed contrary to the public good.
Are there any rights of appeal against a deprivation order?
Yes, people subjected to a deprivation order often have the ability to appeal. They can contest the decision by appealing to the First-tier Tribunal or the Special Immigration Appeals Commission (SIAC).
Can British citizenship be revoked without notice?
Yes, under certain circumstances, the government can revoke British citizenship without prior notice, especially if giving notice would pose a risk to national security or public safety.
What should someone do if they believe they may lose their British citizenship?
Individuals who are concerned about the possibility of losing their British citizenship should seek legal advice as soon as possible. Consulting with an immigration lawyer can help clarify their rights and options, especially regarding any actions they can take to protect their citizenship status.
Dr Bernard Andonian is the Co-Founder of Gulbenkian Andonian Solicitors and a leading authority in UK immigration, human rights, family and civil litigation law. With over 40 years of experience, he brings a wealth of legal knowledge and courtroom expertise. A former Judge and a recipient of a PhD in Law from the University of West London, Dr Andonian has served on the Law Society’s Immigration Law Panel, where he played a key role in shaping national legal standards. His name is featured in the Legal 500 Hall of Fame, recognising his consistent excellence and influence in the field. Known for his practical approach and deep understanding of immigration law, he is frequently consulted for commentary on policy changes and legal reform.