Key points
- As of April 2026, British dual nationals can no longer enter the UK on a foreign passport alone
- Travelers must show a valid British passport or a Certificate of Entitlement costing £589
- Airlines may deny boarding to those without proof of British status
- The change follows the UK's ETA expansion, now costing £20 for visa-exempt visitors
The UK tightens entry rules for British dual nationals
The UK government has introduced stricter border rules, in force from April 2026, that stop British dual nationals from entering on a foreign passport alone. Travelers now need either a valid British passport or a Certificate of Entitlement, which costs £589.
Previously, dual citizens living abroad could enter using a non-British passport, such as a US or EU passport. That is no longer permitted, and airlines may refuse boarding to passengers who cannot show proof of British status.
The Home Office said the certificate fee “is part of our commitment to ensuring the immigration system is self-funding.”
Part of a wider digital border push
The change is tied to the UK’s move to digitize its borders and classify every arrival correctly, following the expansion of the Electronic Travel Authorisation (ETA) scheme, now priced at £20 for visa-exempt foreign visitors. More on entry documents is on the United Kingdom page.
Families report added stress
Dual-national families can run into problems when surnames do not match across their passports. One family described how “a simple surname mismatch between two countries has escalated into months of admin stress, financial loss, and fear about being separated at the border.”
Under the new digital systems, British dual nationals who lack the right documents may face secondary examination at the border, which can last several hours while officers verify citizenship against internal databases.
