Starting February 25, 2026, British dual citizens entering the UK without a UK passport may be denied entry under new Home Office rules. The Electronic Travel Authorisation (ETA) scheme requires all travelers, including dual citizens, to prove their permission to enter the UK. Dual citizens must present a valid UK passport or a certificate of entitlement, as previous documents like non-British passports will no longer suffice. This change aims to digitalize border measures and is part of a broader enforcement by carriers like airlines and ferry operators.
