Dual nationals face a potential barrier to entering the UK from February 25th, 2026, unless they hold a British passport. This new rule, introduced by the Home Office, has sparked concern among British citizens living or traveling abroad. The change in border regulations requires all travelers to obtain permission, except for British or Irish citizens and those who are exempt. Short-term visitors will need to apply for an Electronic Travel Authorisation, which costs £6. The introduction of this scheme poses a significant challenge for dual citizens, who will now have to present either a valid British passport or a £589 certificate of entitlement to board flights, ferries, or trains. The Home Office's spokesperson emphasizes the necessity of this measure for a seamless travel experience and to enhance border security. However, critics argue that the certificate fee is excessive and could effectively 'lock out' British citizens from their own country. The EU citizens' group 'The 3 Million' advocates for a low-cost, one-time travel authorization similar to Canada's system, allowing dual citizens more flexibility and avoiding the high certificate fee. This controversy highlights the need for a balanced approach to border control and citizen access, inviting public discussion on the matter.