All 34, who were rounded up when they arrived at Folkestone, have been handed over to immigration officials. EWS says the latest incident highlights how freight trains through the Channel Tunnel have been disrupted for six months, costing more than £10 million. It is pleading for security to be stepped up at the freight yard in Frethun, near Calais - run by French rail operators SNCF - where the cargo trains start out.