Can dual nationals use expired British passports?

What travelers with two nationalities need to know now

Recent developments have created a narrow pathway for some dual nationals to enter the United Kingdom using an expired British passport, but the situation is complex and depends on both changing immigration rules and the discretion of carriers and border officials. New government measures intended to tighten proof-of-rights checks for people holding more than one nationality prompted airlines and some carriers to give pragmatic advice: in some cases an expired British passport may be accepted as evidence of entitlement to enter.

Why this is significant: the new measures require people who hold both UK citizenship and another nationality to be ready to prove their British status on arrival. That step is intended to prevent non‑British nationals from trying to use British documentation to enter without the correct rights. An expired British passport can sometimes demonstrate prior status, but it does not guarantee admission by itself.

Practical guidance for dual nationals:

• Carry both passports. Have the valid foreign passport and any British passport—expired or current—available at check‑in and on arrival.
• Bring supporting documents. Where available, carry supplementary proof of British nationality, such as a citizenship certificate, previously issued biometric documents, or a passport card.
• Contact the airline before travel. Carriers can refuse boarding if they judge documentation insufficient; ask them what they will accept.
• Allow extra time at immigration. Border officers may ask additional questions or request documents to verify status.

It’s still unclear how consistently expired passports will be treated across airports and airlines, so dual nationals should prepare for extra scrutiny and confirm documentation requirements before travel.