Letter to Shabana Mahmood describes controls that could block British dual citizens’ entry to UK as ‘unacceptable’

The Liberal Democrats have called on the home secretary to “move at speed” to delay the rollout of new border controls that could result in British dual nationals being blocked from entering the country.

A letter sent by the party to Shabana Mahmood echoes one sent by the former Conservative cabinet minister David Davis on Friday asking for a grace period to be implemented urgently after one of his constituents living in the Netherlands told how she could no longer visit her dying mother in a care home in Yorkshire.

Families have told of the cancellation of flights to attend funerals, 80th birthday parties and visits to elderly and dying parents. Young parents who were forced to take out citizenship in the EU because of Brexit, but whose children do not yet have British passports, have also been hit.

From Wednesday British dual nationals risk not being allowed to board a plane, ferry or train unless they present a current or expired British passport or a “certificate of entitlement” costing £589, which takes eight weeks to obtain.