Introduction: What Dual Nationality Means in the UK
When someone obtains British citizenship in addition to another country or nationality, this is known as dual citizenship. Dual nationality is permitted in the UK, and obtaining another nationality does not force you to give up your British citizenship. However, dual citizens have particular obligations when it comes to travel and passports.
Important 2026 UK Passport Rule Changes for Dual Nationals
From 25 February 2026, British dual citizens must carry a valid British passport in order to enter the UK. If you do not have a British passport, you must hold either:
- a valid British passport, OR
- a valid Irish passport (if applicable), OR
- a foreign passport with a Certificate of Entitlement proving your right to live in the UK.
These new rules replace the previous guideline where many dual nationals could enter the UK using only their other country’s passport.
Why These Changes Are Happening
Like other nations, such as the US and Canada, the UK has started the Electronic Travel Authorisation (ETA) program. Most travellers from nations that do not require a visa must first get permission. However, citizens of the United Kingdom and Ireland are not permitted to apply for an ETA. The new border control regulations require airlines and transporters to verify that dual nationals are in possession of proper documentation prior to their departure. Therefore, a British passport or another accepted document is the sole entrance document that dual nationals in the UK can use with universal recognition.
How to Apply for a British Passport
1. Check Your Eligibility
You must be able to prove that you are a naturalised, born, or descended British citizen. If you’re not sure, you can consult official documentation about your citizenship or the UK Home Office’s instructions. You must be able to prove your citizenship; having dual nationality won’t affect your eligibility.
2. Gather Required Documents
When applying, prepare:
- Your birth certificate or naturalisation certificate
- Proof of identity (e.g., previous passports)
- A recent passport-standard photo
- Supporting documents (name change certificates, marriage certificates, etc.) if applicable
Ensuring all documents are accurate and consistent reduces delays.
3. Submit Your Application
You can apply:
- Online through the UK government portal
- By post (if online is not suitable)
Overseas applicants can apply via British embassies, high commissions or consulates.
You must complete the form accurately and sign where required.
4. Pay the Fees
Current costs (approximate, may vary by location and service):
- Adult standard British passport: £94.50 (approx)
- Child passport: lower fee than adult
- Priority or expedited fees may apply.
Processing timelines vary but can take several weeks, particularly for first-time applications or those from abroad.
What Is a Certificate of Entitlement?
You may apply for a Certificate of Entitlement to the Right of Abode if, on the date of enforcement, you do not possess a valid British passport. This document allows carriers to authenticate your right of entry and validate your residency in the UK. It needs to be in your foreign passport.
However, the certificate:
- Costs around £589 when applied for outside the UK
- Needs renewal if your passport changes
- Is generally a more expensive alternative compared with holding a British passport
Travel Tips for Dual Nationals in 2026
Plan Ahead
Start your passport application early, especially if you live abroad. Processing times can extend during peak periods, and some carriers may enforce entry checks at check-in.
Carry Proper Documentation
You must present one of the accepted UK entry documents before boarding UK-bound transport. Failing to show the required passport or certificate may lead to:
- Denied boarding by airlines or ferry companies
- Entry refusal at UK borders
What About Irish Dual Nationals?
Due to the Common Travel Area agreement, you may be able to visit the UK with either your British or Irish passport. However, if you are a primary UK citizen, it is best to bring your British passport.
Conclusion
Travellers will notice a major change in the rules for dual citizens applying for passports in 2026. Dual nationals of the United Kingdom will need to have proper documentation as of February 25, 2026, in order to avoid travel delays. For travel to the UK in 2026 and beyond, the most flexibility and savings are offered by applying for or renewing a passport as soon as feasible.
