British dual citizens entering the UK will be required to present a valid UK passport or a certificate of entitlement starting February 25, 2026, as part of the Home Office’s new Electronic Travel Authorisation (ETA) scheme. This change affects dual citizens traveling on non-British passports, who may face denial of entry if they lack proper documentation. Previously, dual nationals could use other documents, but the new rules aim to streamline border control. Those without a valid UK passport have limited time to obtain one, with costs for renewal starting at £94.50.
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