New rules brought into force affecting dual British citizens

25-Feb-2026

New rules brought into force affecting dual British citizens

From 25 February 2026, the UK is enforcing stricter border and documentation rules. A fully digital border system is being introduced as part of the UK’s electronic travel authorisation (ETA) scheme. It will be mandatory for visitors to the UK to have obtained digital permission to travel.

Foreign nationals will not be able to enter the UK, and may be prevented from boarding a flight to the UK if they do not have an ETA, eVisa or have other valid documentation.

Dual British citizens

The new rules could affect British nationals with dual citizenship. From 25 February 2026 dual British citizens will be required to present either a valid British passport or a Certificate of Entitlement when travelling to the UK. Previously, dual citizens have been able to enter the UK using their other country passport, if their other citizenship allowed visa-free travel to the UK. However, from 25 February 2026 the new rules will be strictly enforced, meaning they may be unable to enter the UK, or may be denied boarding their flight to the UK without a valid British passport or a Certificate of Entitlement.

We strongly recommend that groups check with all passengers whether they are dual citizens. It is vital that dual British citizen passengers should obtain and travel with a British passport (or Certificate of Entitlement) to avoid potential problems.

Foreign nationals living in the UK will typically need their valid passport (or national identity document) together with digital proof of their immigration status (eVisa). The passport must be linked to their UKVI (UK Visas and Immigration) account.