Cross-Channel ferry passengers have been warned it could take up to three hours to get through passport controls amid heightened French security checks, following the terrorist attack in Nice.
Travellers passing through the Port of Dover in Kent were urged to allow plenty of time for their journey as traffic built up on surrounding roads.
The A20 was busy this morning with freight traffic, port officials said, and DFDS Seaways advised passengers due to travel from Dover to allow three hours to get through passport control.
Passengers have been sharing their frustrations on Twitter:
France has been under a state of emergency since a terrorist attack in Paris last November left 130 people dead. This week the country's National Assembly voted to extend it by six months.
A Port of Dover spokesman said: "Due to ongoing heightened French security checks, the Port of Dover is advising customers to allow plenty of time for their journey."