Fraz Wahlah

New Rules for British Citizens Travelling to the UK Using a Non-British Passport (2026 Guide)

British Citizenship
Published 8 months ago

If you are a British citizen who also holds another nationality, recent rule changes could affect how you travel to the United Kingdom. From 25 February 2026, the UK government is enforcing stricter entry requirements. This guide explains the new rules in clear, simple, and legally accurate terms.

The Key Change in 2026

From 25 February 2026, British citizens who hold another nationality (often called dual citizens) can no longer normally enter the UK using only a foreign passport.

Instead, you must travel with one of the following:

A valid UK passport, or
A valid Irish passport, or
A foreign passport that contains a Certificate of Entitlement (COE) confirming your right of abode in the UK.

If you do not have one of these documents, you may be refused boarding by the airline or delayed/refused entry at the UK border.

Why the Rules Have Changed

The new policy is linked to the UK’s digital border system and the rollout of the Electronic Travel Authorisation (ETA).

Dual British citizens cannot apply for an ETA, because they already have the right to live in the UK.
However, the UK now requires clearer proof of citizenship before travel.
Airlines must check documents before departure, which is why travelling on the correct passport is now essential.

What Is a Certificate of Entitlement?

A Certificate of Entitlement (COE) is an official sticker placed inside a foreign passport confirming that the holder has the right of abode in the UK (meaning the legal right to live and work in the country).

You may need a COE if:

Your UK passport is expired or unavailable, and
You want to travel using a non-UK passport.

However, many travellers choose to renew their UK passport instead, as it is often simpler and cheaper in the long term.

What Happens If You Travel Without the Correct Documents?

From February 2026 onward:

Airlines may refuse to let you board.
You could face extra identity checks at the UK border.
Entry delays or refusal are possible until your British nationality is confirmed.

For this reason, the UK Home Office strongly advises dual citizens to ensure they have the correct passport or certificate before travelling.

Does This Affect All British Citizens?

This rule mainly affects British citizens who also hold another nationality and normally travel using their non-UK passport.

It does not affect:

British citizens travelling with a valid UK passport
Irish citizens entering the UK on an Irish passport
Non-British travellers (they follow separate visa/ETA rules)

Practical Travel Tips

If you are a British dual citizen planning to travel to the UK:

Check your UK passport validity early.
If you do not have a UK passport, consider applying for one.
If you must travel on another passport, apply for a Certificate of Entitlement well in advance.
Carry both passports when possible to avoid confusion.
Do not book travel until your documents are ready.

Final Thoughts

The 2026 rule change does not remove your British citizenship, but it does change how you must prove it when travelling. From now on, British dual citizens generally need a UK (or Irish) passport—or a Certificate of Entitlement—to enter the UK smoothly.

Checking your documents before travel will help you avoid delays, denied boarding, or unexpected costs.

This article is for general information only and does not constitute legal advice. Book a consultation with our specialist Citizenship lawyer for advice before travelling.