From 25 February 2026, airlines and carriers are enforcing the UK’s “permission to travel” checks more strictly. If you are a dual British national, you do not need an ETA, but you do need to prove your right to travel to the UK using the correct document.
What to use
You should travel with one of the following:
• a valid UK passport, or
• a valid Irish passport, or
• another valid passport with a Certificate of Entitlement (Right of Abode).
Official guidance: https://www.gov.uk/guidance/electronic-travel-authorisation-eta-guide-for-dual-citizens
Why this matters
If you attempt to travel using only a non-UK passport (even if it’s normally visa-free), you may face disruption at check-in because carriers must confirm permission to travel before boarding.
Background announcement: https://www.gov.uk/government/news/uk-enforces-digital-permission-to-travel
What to do now
• If you are a dual British national and do not currently have a valid UK passport, consider renewing/applying as early as possible.
• If you rely on a Certificate of Entitlement, check you have it linked to the passport you will travel on.
General information only. For the official guidance, see GOV.UK’s ETA guidance for dual citizens.