Dual Residency UK and France: 2026 Guide to Brexit Card Renewals and French Citizenship

2026 is a critical year for British nationals living in France. The first wave of 5-year Brexit residence cards (issued under Article 50 TUE following the UK’s departure from the EU) is now reaching its expiry dates. Approximately 50,000 British residents must act now to renew their cards and secure long-term status in France. For many, this deadline is prompting a bigger question: is it time to pursue dual British-French nationality rather than simply renew a residence permit?

Dual residency between the UK and France and French-British dual nationality are two distinct legal statuses. Understanding the difference between them matters. Maintaining dual UK-France residency means holding valid documentation in both countries. You need a UK address and a French residence permit. However, this does not grant citizenship rights. Dual nationality, by contrast, means holding both passports and the full rights of each country. France permits this, and the UK does not restrict it. 

However, France introduced stricter naturalisation requirements as of January 1, 2026. This includes a mandatory civic exam and an elevated B2 French language standard. This guide covers Brexit card renewals, the route to French-British dual nationality, and everything that has changed heading into 2026.

Understanding Dual Residency vs Dual Nationality: Key Differences

Dual residency in the UK and France means legally living in the two countries, each with a valid residence permit. Dual nationality means holding citizenship and passports from both countries. Both the UK and France permit dual nationality, so British nationals can become French citizens without renouncing their British citizenship.

What Is Dual Residency?

Dual residency for UK citizens in France means holding a valid French residence permit (such as the carte de séjour Article 50 TUE) while retaining their UK address and ties. It is a practical arrangement, but it comes with conditions. French residence permits must be renewed, physical presence requirements must be met, and absences from France can jeopardise long-term status. Dual residency does not grant voting rights, consular protection abroad, or the right to a French passport.

What Is Dual Nationality (Dual Citizenship)?

Dual nationality means holding full citizenship in both the UK and France. A dual citizen holds two passports and enjoys the full rights of both countries. Rights include the right to live, work, and vote without conditions or permit renewals. France allows dual nationality without restriction. The UK does not require British citizens to renounce their nationality when acquiring a second citizenship. This means British nationals who naturalise as French citizens retain their British passport in full.

Why the Distinction Matters in 2026

The difference between residency and citizenship has never been more consequential for British nationals in France. Residence permit holders remain subject to renewal cycles, language requirements, and physical presence rules. Citizens do not. 

With approximately 50,000 five-year Brexit residence cards expiring in 2026, many British residents will soon face the renewal process. In many cases, it makes sense to renew the residence permit while also pursuing dual nationality to permanently move beyond future renewals.

France’s tightened 2026 naturalisation rules (including a new civic exam and a B2 language requirement) mean that acting sooner rather than later is advisable for those considering citizenship.

Brexit Residence Card Renewals in France 2026

The first 5-year Brexit residence cards (carte de séjour Article 50 TUE) issued in 2020-2021 are now expiring. Approximately 50,000 British nationals in France must renew their cards in 2025-2026. Upon renewal, you receive a 10-year permanent residency card. Contact your préfecture at least 2 months before expiry. It’s important to know that the online ANEF portal does not handle WARP card renewals.

When Does Your Brexit Card Expire?

France began issuing Brexit residence cards in 2021 following the end of the UK-EU transition period on December 31, 2020. Cards issued in 2021 have a 5-year validity period, meaning large numbers are expiring between 2025 and 2026. Check the expiry date printed on the front of your card. If your card expires within the next 6 months, you should begin the renewal process immediately. Allowing your card to expire before renewing can create complications for travel, employment, and access to public services.

The 5-Year to 10-Year Upgrade

Renewing your Brexit residence card is not simply a like-for-like replacement. British nationals who have completed 5 years of continuous legal residence in France under the Withdrawal Agreement are entitled to a 10-year permanent residency card.

This upgraded card (carte de résident) provides significantly more stability. It removes the need for further renewals for a decade and strengthens your legal footing in France. It also demonstrates continuous residence, which is a key requirement if you later pursue dual nationality through naturalisation.

How to Renew: Prefecture Process (Varies by Location)

This is one of the most important practical points for British residents in 2026. The renewal process for Withdrawal Agreement Residence Permits depends on the préfecture responsible for your place of residence, and procedures can vary between départements.

In many cases, WARP card renewals are not processed through the ANEF online portal, which is typically used for standard French residence permit applications. Instead, renewals are handled directly by your local préfecture or sous-préfecture.

Contact your préfecture at least 2 months before your card’s expiry date to understand the procedure and, if required, request an appointment. Some préfectures may accept postal applications, while others require an in-person visit. Because procedures vary by location, it is important to check the specific instructions issued by the préfecture that manages your file.

Documents Required for Renewal

Requirements can vary slightly by préfecture, but the following documents are typically required:

• Your current Brexit residence card (carte de séjour Article 50 TUE)
• Valid British passport
• Proof of continuous residence in France for 5 years (utility bills, tax returns, tenancy agreements)
• Proof of stable income or financial resources
• Recent passport-sized photographs meeting French specifications
• Completed application form provided by your préfecture
• Proof of address (dated within the last 3 months)

Gather documents covering the full 5-year period. Gaps in your residence evidence are the most common reason for delays. If your situation is complex, for example, if you have spent extended periods outside France, legal advice is recommended before submitting.

Your Rights Under the Withdrawal Agreement: What the WARP Card Provides

The Withdrawal Agreement Residence Permit (WARP) grants British nationals rights similar to those of EU citizens in France. This includes the right to live and work without additional permits, access to social benefits, healthcare through the French system, and unconditional renewals. These rights are protected by international law and cannot be unilaterally changed by France.

Key Rights of WARP Card Holders

The WARP card provides a robust set of protections that distinguish it clearly from a standard French residence permit. Holders enjoy the following rights:

• Right to live in France permanently, provided absence limits are respected
• Right to work or run any business without a separate work permit
• Access to CAF social benefits, including family allowances and housing support
• Access to the French healthcare system (Sécurité Sociale) on the same basis as French nationals
• Free card renewals, unlike standard carte de séjour holders, who pay €200 or more per renewal
• Unconditional renewals. No language test, no civic integration requirement, no income threshold to renew

These protections are enshrined in the UK-EU Withdrawal Agreement and monitored by the Joint Committee. They represent a significantly stronger legal position than that of non-EU, non-Withdrawal Agreement residents in France.

Absence Limits: 5-Year vs 10-Year Card

One of the most consequential differences between the two card types concerns how long you can spend outside France without jeopardising your status. The table below outlines the key distinctions:

The 10-year permanent card offers considerably greater flexibility for British nationals who split their time between the UK and France. If you travel frequently or spend extended periods in the UK, upgrading to the permanent card significantly reduces the risk of losing your French residency status through absence.

What WARP Card Holders Cannot Do

Despite its strong protections, the WARP card does not confer the full rights of French citizenship. British nationals holding a dual residency between the UK and France arrangement under the Withdrawal Agreement should be aware of these limitations:

• Cannot vote in French elections, local, national, or European
• Cannot bring a new spouse or partner to France under Withdrawal Agreement rights. 
• Cannot move freely to other EU countries. WARP rights apply exclusively within France, not across the Schengen Area
• Cannot hold a fonctionnaire position. Public sector roles reserved for French and EU citizens remain inaccessible to WARP cardholders

These limitations are a significant reason why a growing number of British residents are looking beyond residency renewal and toward French-British dual nationality as a more permanent solution.

Pathway to Dual British-French Nationality: French Citizenship

British nationals can become French citizens while keeping their UK passport because both countries permit dual nationality. The main pathways are naturalisation after 5 years of residence, or marriage to a French citizen after 4 years. From January 1, 2026, France will require a B2-level of French and a new 40-question civic exam for all naturalisation applicants.

Citizenship by Naturalisation

Naturalisation is the most common route to dual nationality for British residents in France. To qualify, applicants must demonstrate 5 years of continuous, legal residence in France immediately prior to their application. The 5-year period is calculated from the date of your first valid residence permit, meaning many WARP card holders who arrived in 2020-2021 are now approaching or have already reached eligibility. Key requirements include:

• 5 years of continuous legal residence in France (reduced to 2 years for graduates of French grandes écoles or universities)
• B2 level French language certificate from an approved testing body (increased from B1 from January 1, 2026)
• Completion of the new civic exam. This mandatory 40-question test was introduced on January 1, 2026
• Proof of integration into French society. This includes employment contracts, tax contributions, and community involvement
• Clean criminal record in both France and the UK
• Sufficient and stable income, typically equivalent to the French minimum wage (SMIC)

Applications are submitted to your local préfecture. Processing times currently average 12 to 18 months. If you are approaching your 5-year residency threshold, our lawyers can help you assess your eligibility and prepare a complete file before the 2026 requirements take effect.

Citizenship by Marriage

British nationals married to a French citizen can apply for dual nationality after 4 years of marriage, provided they have been living together throughout that period. This timeline extends to 5 years if the couple has not resided in France for at least 3 years during the marriage, or if the French spouse has not been registered with a French consulate abroad for at least 3 years. Key requirements for this pathway include:

• 4 years of marriage to a French citizen (with conditions as above)
• Proof of shared life: joint address, financial records, family documents
• B2 French language level from January 1, 2026 (previously B1)
• Completion of the 2026 civic exam. This requirement applies to marriage-route applicants as well
• Clean criminal record in both countries

Citizenship by marriage is not automatic and is subject to the same ministerial discretion as naturalisation. The French government can refuse or defer an application if it determines that assimilation into French society is insufficient.

Citizenship by Descent (Jus Sanguinis)

France applies the principle of jus sanguinis, citizenship by blood, meaning that children born to a French parent are automatically French citizens, regardless of where they were born. For British nationals with French ancestry, this pathway can provide a route to dual French-British nationality without the residence or language requirements attached to naturalisation. Relevant scenarios include:

• One French parent
  • The child is automatically entitled to French citizenship at birth
• Two generations back
  • If a parent was born French but later naturalised elsewhere, eligibility depends on whether French nationality was formally maintained or transmitted
• Late registration
  • French citizenship by descent can be claimed at any age, provided the lineage is properly documented through civil records

This route requires thorough documentary evidence, including birth certificates, marriage records, and proof of the ancestor’s French nationality. The process is handled through the French Ministry of Justice or a French consulate. If you believe you may have a claim through French citizenship by descent, specialist legal advice is strongly recommended before investing time in the naturalisation process.

New for 2026: Stricter French Citizenship Requirements

On January 1, 2026, France introduced significantly stricter citizenship requirements. All naturalisation applicants must now pass a 40-question civic exam with an 80% pass mark AND demonstrate B2 level French, up from B1. These requirements apply to all applicants, including those applying through marriage. WARP cardholders are exempt from these requirements for residency renewals, only for citizenship applications.

The New Civic Exam (Examen Civique)

The mandatory civic exam (examen civique) was introduced on January 1, 2026, and applies to all French naturalisation applicants regardless of their route to citizenship. The exam tests knowledge of French republican values, institutions, history, and civic life. Key details include:

• 40 questions covering French history, the Republic’s institutions, civic rights and duties, and French values
• 80% pass mark required. Applicants must answer at least 32 out of 40 questions correctly
• Must be sat at an approved examination centre, the exam cannot be taken online
• No limit on retakes, but each failed attempt delays the overall application timeline
• Applies to all routes: naturalisation by residence, by marriage, and other pathways are all subject to the exam
• Preparation materials are available through official French government channels and approved civics courses

The introduction of this exam represents a meaningful shift in France’s approach to citizenship. Previously, integration was assessed largely through interviews and document review. The civic exam introduces a standardised, objective threshold that all applicants must clear before their file is approved.

New Language Requirements

France has raised the minimum French language standard for citizenship applicants from B1 to B2 on the Common European Framework of Reference (CEFR). B2 is classified as upper-intermediate level. This is the point at which a speaker can understand complex texts, express ideas fluently, and interact with native speakers without significant strain. For British nationals pursuing dual nationality, this is a material increase in the bar. Practical implications include:

• B2 certificate is required from an approved testing body.
  • Accepted qualifications include DELF B2, TCF (with a B2 result), and equivalent certifications
• Self-assessment is not accepted
  • Applicants must provide documentary proof of their language level
• B2 applies to all naturalisation routes from January 1, 2026
• Preparation time should be factored in
  • Moving from B1 to B2 typically requires 200 to 400 hours of structured study, depending on starting level
• Language courses recognised by the French state are available through Alliance Française and other approved providers

British nationals who began their citizenship application before January 1, 2026, and submitted a complete file prior to that date, may be assessed under the previous B1 standard. Anyone whose application was incomplete or not yet submitted is subject to the new B2 requirement.

WARP Card Holders: You Are Exempt

This is a critical distinction that is widely misunderstood. The 2026 civic exam and the B2 language requirement apply exclusively to French citizenship applications; they do not affect WARP card renewals in any way. British nationals renewing their Brexit residence card under the Withdrawal Agreement face no language test, no civic exam, and no integration assessment of any kind. The table below summarises the difference clearly:

For British residents who are not yet ready, or not yet eligible for citizenship, renewing the WARP card remains a secure and straightforward option. The exemptions protecting dual residency between the UK and France under the Withdrawal Agreement remain firmly in place for residency purposes.

Frequently Asked Questions About Dual Residency in the UK and France

Can I Have Dual British and French Nationality?

Yes. Both the UK and France permit dual British-French nationality. British nationals who naturalise as French citizens retain their British passport in full and do not need to renounce their UK citizenship.

How Do I Renew My Brexit Residence Card in France?

Renewals must be submitted directly to your local préfecture. Contact your préfecture at least 2 months before your card’s expiry date to request an appointment or confirm the required procedure for your département.

Do I Need to Take a Language Test to Renew My Brexit Card?

Yes. From January 1, applicants renewing their Brexit residence card must demonstrate an A2 level of French.

This typically means providing proof of French language ability at the A2 level of the Common European Framework of Reference for Languages (CEFR).

What Happens If I Don’t Renew My Brexit Card Before It Expires?

Allowing your card to expire can complicate your legal status in France and create difficulties when travelling, working, or accessing public services. Contact your préfecture before expiry. Do not wait until your card has already lapsed.

How Long Can I Be Outside France Without Losing My Residency Rights?

Holders of the 5-year WARP card must not exceed 6 consecutive months outside France in any 12-month period. Holders of the 10-year permanent card can be absent for up to 5 consecutive years without losing their residency status.

Should I Apply for French Citizenship or Just Renew My Residence Card?

In most cases, we recommend doing both at the same time. Renewing your WARP card ensures you maintain your legal residence status in France while your citizenship application is being processed.

Applying for French citizenship can offer greater long-term security, including access to a French passport and voting rights. However, citizenship applications now require additional steps, including B2 French proficiency and passing a 40-question civic exam starting January 1, 2026.

For many British residents, the practical approach is to renew their residence card while beginning the process of applying for French citizenship, thereby maintaining status while working toward full nationality.

What Is the New French Civic Exam for Citizenship?

The examen civique is a mandatory 40-question exam introduced on January 1, 2026. It tests knowledge of French history, republican values, and civic institutions. Applicants must score at least 80% (32 correct answers out of 40) to pass. It applies to all naturalisation routes, including citizenship by marriage.

Can I enter the UK With Just My French passport if I’m a Dual Citizen?

From February 25, 2026, French-British dual nationality holders are strongly advised to use their British passport when entering the UK. UK Border Force may not automatically recognise your entitlement to enter as a British citizen if you present only a French passport, which could cause delays or complications at the border.

Need Help Securing Dual Residency in the UK and France?

2026 marks a turning point for British nationals living in France. Approximately 50,000 five-year Brexit residence cards are expiring, and the renewal process requires direct action through your local préfecture — not the ANEF portal. At the same time, France has raised the bar for citizenship, introducing a mandatory 40-question civic exam and a B2 language requirement from January 1, 2026.

The good news is that your options remain strong. WARP cardholders retain unconditional renewal rights with no language tests, no civic exam, and no renewal fees. Those who qualify for dual British-French nationality through naturalisation or marriage now have a clear — if more demanding — pathway to a French passport without giving up their British one.

The decision between renewing your dual residency status in the UK and France and pursuing French-British dual nationality is not a one-size-fits-all. It depends on how long you have lived in France, your French language level, how frequently you travel, and your long-term plans. What is clear is that waiting carries risk. Cards left to expire create legal complications. Citizenship applications submitted after January 1, 2026, are subject to the new requirements. Acting now, whichever route you choose, puts you in a stronger position.

Ready to get started? Our passionate French legal team is here to help you understand whether dual residency or citizenship is the right option for your situation. From the first assessment to the final approval, each step of the process becomes clearer with the right guidance.

Navigating Brexit card renewals, préfecture procedures, and French naturalisation requirements is complex. Small errors in documentation or timing can cause significant delays. At Lexidy, our immigration lawyers work with British nationals across France to manage residence renewals, assess citizenship eligibility, and guide applications from start to finish. If you are unsure which route is right for your situation, we can help you understand your options clearly and move forward with confidence.