Port workers strike action in Calais for the second time in a week has stranded thousands of ferry passengers on both sides of the Channel.
The MyFerryLink workers walked out over the sale of the company’s ferries to rival DFDS Seaways.
Sailings between Dover and the French port are at a standstill, but services to Dunkirk are operating as normal reports BBC.
The boss of P&O Ferries said security at Calais had been “abandoned” leaving passengers “caught in the middle”.
Also, passengers using the Channel Tunnel are subject to delays following an earlier incident, Eurotunnel said.
Passengers hoping to travel to Calais by ferry have been urged to contact their ferry operators.
A strike which began on 23 June led to the suspension of Channel Tunnel services and saw hundreds of migrants try to board UK-bound lorries amid the chaos.
The current strike action is expected to continue until Thursday, when DFDS officially takes over the MyFerryLink service.
Speaking to BBC,Helen Deeble, the chief executive of P&O Ferries, said: “Through no fault of their own, our passengers are caught in the middle of an industrial relations battle that has been caused by Eurotunnel.