Government ignores pleas for a grace period before new rules come into force on Wednesday

British citizens with a second nationality risk being blocked from entering the UK from Wednesday, the Home Office has confirmed.

The government has decided to ignore pleas from families, the Liberal Democrats and the former Conservative cabinet minister David Davis for a grace period to allow British dual nationals to adapt to the new rules they face.

Those who do not present a British passport or a certificate proving their right to enter the UK may be refused boarding on a flight, ferry or train under the latest rules.

A Home Office spokesperson said: “The UK is moving to a modernised digital immigration system to enhance our border security. From 25 February, international carriers will check all passengers for valid permission or status to travel to the UK – just as they currently do for visa nationals.