British holidaymakers heading to Europe this summer could face “terrible” queues of five hours after fresh delays implementing new border technology.

A £40m facility to help ease congestion at Dover is unlikely to be open in time for the summer holidays, the port’s chief executive has said.

It means a summer of “mess” and “chaos” lies ahead on the roads leading up to the busy south coast port as millions of UK tourists head to France, drivers have been warned.

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EES kiosks ‘probably’ not ready for summer