Cross-Channel travellers from Britain have been hit with long delays after hundreds of migrants stormed the terminal and platforms in France.
Eurotunnel was forced to suspend services in both directions on Monday morning, forcing passengers to wait for almost four hours in Kent.
The “mass intrusion” overnight led the Channel Tunnel operator to halt services from Folkestone to Coquelles, in northern France, for several hours.
Migrants were said to be using diversionary tactics to occupy police so others were free to make a bid to cross into the UK.
A Eurotunnel spokesman said: “They are coming in waves to occupy the police, then another wave comes, then another, until there is no more police. One group is then able to get through.
“Then we have to take over and sweep through the terminal and clear them all from the tracks and the platform.”
The disruption affected early-morning trains and French-bound passenger services had resumed by about 10am.
However, Eurotunnel warned that holidaymakers faced a two-hour wait at the Folkestone terminal and another 90 minutes before check-in. A spokesman said they were “starting to get freight traffic moving” as well.
It meant drivers heading to the Eurotunnel terminal near Folkestone endured long delays as traffic built up.