The UK Government has confirmed that, from 2026, dual British citizens will be required to present a valid British passport when entering the country, marking a significant tightening of border procedures.
Under the new policy, travellers holding British citizenship alongside another nationality will no longer be able to enter the UK using only their foreign passport. The only alternative will be a Certificate of Entitlement to the Right of Abode, which currently costs £589.
The change supports the expansion of the UK’s Electronic Travel Authorisation (ETA) system, designed to streamline and digitise border checks.
According to Lisa Uttley, Immigration Partner at Gherson Solicitors LLP, the policy reflects a move towards stricter, more automated border management. By requiring dual nationals to travel on their British passport, airlines and border officials can more easily distinguish between visitors who require prior permission and citizens who have an automatic right of entry.
The shift reduces ambiguity in pre-travel document checks, particularly as carriers are increasingly responsible for verifying entry eligibility before departure.
For dual nationals living overseas, the rule introduces new practical and financial considerations. Those whose British passports have expired will now need to renew them before travelling or apply for a Certificate of Entitlement.
While citizenship continues to guarantee the right of entry, the Government is effectively requiring that right to be presented in the correct documentary, and increasingly digital, format.
Uttley suggests that for some affected individuals, the measure may feel more onerous than administrative.
The policy aligns with a wider global shift towards digital-first immigration systems. Countries worldwide are investing in automated clearance processes, advance passenger information systems and pre-travel authorisation schemes.
For UK-based businesses employing dual nationals or managing internationally mobile staff, the change reinforces the importance of checking passport validity well ahead of travel.
From 2026 onwards, dual British citizens returning to the UK will need to ensure they are travelling on the correct passport, or face additional costs and potential boarding issues.
As border systems become more digitised and standardised, flexibility is narrowing, and compliance is becoming central to international mobility.