Can British Citizenship Be Revoked? Legal Grounds Explained

This article was last updated on April 4th, 2025

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.

With the introduction of the Nationality and Borders Bill, 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.
• Revoked individuals 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 deprived 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.

The Nationality and Borders Act 2022

In 2022, the UK government introduced new powers to deprive individuals of their British citizenship under the Nationality and Borders Act. One key provision allows the Home Office to revoke citizenship without prior notice when national security is at risk, such as in situations where revealing the decision could jeopardise security efforts. This expands the government’s ability to act swiftly in response to serious threats.

The Act also broadens the criteria for deprivation, particularly targeting those involved in terrorism, espionage, or other security-related offenses. It allows for citizenship revocation even if the individual holds dual nationality, ensuring that the person is not left stateless while still safeguarding the UK’s legal obligations.

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.

Related article: Deprivation of Citizenship in the UK: Understanding the Process

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

Perhaps the most well-known case is that of Shamima Begum, who travelled to Syria as a teenager to join the Islamic State (ISIS). In 2019, the UK government stripped her of British citizenship on national security grounds under section 40(2) of the British Nationality Act 1981.

Begum challenged the decision, arguing that she had been groomed and that removing her citizenship left her effectively stateless. Despite several legal appeals, the Supreme Court ruled in 2021 that she could not return to the UK to pursue her case, citing security concerns.

Mohamed Sakr

A dual British-Egyptian national, Mohamed Sakr, was deprived of his British citizenship in 2010. The government claimed he had been involved in terrorism-related activities. His citizenship was annulled while he was overseas. Shortly after, he was killed in a US drone strike in Somalia.

This case raised concerns about the UK government revoking citizenship without providing individuals the opportunity to appeal or defend themselves while overseas.

Others in the Public Good Category

Between 2010 and 2018, the Home Office revoked British citizenship from dozens of individuals deemed to be a threat to the public good. These cases often involved alleged ties to terrorism, espionage, or serious organised crime. In most instances, the individuals held dual nationality, allowing the government to act without breaching international rules on statelessness.

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.

Appeal Rights

If an individual’s citizenship is revoked, they usually have the right to appeal the decision. Appeals typically take place at the First-tier Tribunal, but in cases involving national security, the appeal is handled by the Special Immigration Appeals Commission (SIAC).

SIAC proceedings are unique in that sensitive evidence may be withheld from the person and their legal team. Instead, a ‘special advocate’ is designated to represent the appellant’s welfare, ensuring the appeal process remains fair despite the restrictions.

Even if the Home Office uses its powers to revoke citizenship without giving prior notice (under the Nationality and Borders Act 2022), you may still be entitled to appeal the decision once it is known.

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. 

Contact us today for a consultation.